Ubuntu regressions update for Firefox

1) Out-of-bounds read

EUVDB-ID: #VU20829

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5849

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Skia graphics library. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Buffer overflow

EUVDB-ID: #VU20834

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11734

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary errors when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Buffer overflow

EUVDB-ID: #VU20835

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11735

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary errors when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20831

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11737

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass CSP.

The vulnerability exists due to incorrect implementation of Content Security Policy (CSP) directive if a wildcard ('*') is specified for the host. A remote attacker can bypass CSP restrictions and gain unauthorized access to the application.

Impact from this issue depends on the web application architecture and may result in information disclosure.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20832

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11738

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass CSP.

The vulnerability exists due to incorrect processing of Content Security Policy (CSP) directive if a hash-based source takes the empty string as input, that leads to execution of any javascript: URIs.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Buffer overflow

EUVDB-ID: #VU20836

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11740

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary errors when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20820

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11742

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to the way the same origin policy is applied to cached images in a combination of SVG filters and a element. A remote attacker can violate same-origin policy and access images from another domain.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20826

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11743

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to incorrect implementation of the unload event. A remote attacker can create a specially crafted web page, trick the victim into visiting and gain access to user's history through timing side-channel attacks.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Cross-site scripting

EUVDB-ID: #VU20819

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11744

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

10) Use-after-free

EUVDB-ID: #VU20818

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11746

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error while manipulating video elements if the body is freed while still in use. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system with privileges of the current user.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

11) Incorrect permission assignment for critical resource

EUVDB-ID: #VU20827

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11748

CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource

Exploit availability: No

Description

The vulnerability allows a remote attacker to collect sensitive information.

The vulnerability exists due to the WebRTC in Firefox honors persisted permissions given to sites for access to microphone and camera resources even when in a third-party context. A remote attacker that can create a specially crafted webpage that loads a trusted resource and trick the browser into allowing usage of microphone and camera resources.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

12) Information disclosure

EUVDB-ID: #VU20828

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11749

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to an error in WebRTC that allows malicious web content use probing techniques on the getUserMedia API with constraints to reveal device properties of cameras on the system without triggering a user prompt or notification. A remote attacker can use such behavior to fingerprint users.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

13) Type Confusion

EUVDB-ID: #VU20830

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11750

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error in Spidermonkey. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a type confusion error and crash the affected application.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

14) Use-after-free

EUVDB-ID: #VU20823

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11752

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when extracting a key value in IndexedDB. A remote attacker can create specially crafted webpage, trick the victim into visiting it, trigger a user-after-free error by deleting the IndexedDB key value and subsequently make the application try to extract it during conversion.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

15) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20824

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-9812

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escape sandbox restrictions.

The vulnerability exists due to a combination of issues related to a compromised sandboxed content and the Firefox Sync ability to synchronize data with the malicious account. A remote attacker can can compromise a sandboxed content process using a different vulnerability, and then escape that sandbox by loading accounts.firefox.com in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then synchronized to the local machine and the compromised browser would restart without the sandbox if a crash is triggered.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

16) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20825

Risk: Medium

CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11741

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform UXXS attacks.

The vulnerability exists due to insufficient isolation of addons.mozilla.org and accounts.firefox.com. A remote attacker can use another vulnerability to compromise a sandboxed process and use it to perform universal cross-site scripting attacks (UXXS). As a result, a remote attacker can modify a user's Firefox configuration.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

17) Resource management error

EUVDB-ID: #VU20833

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11747

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability makes HSTS feature ineffective.

The vulnerability exists due to incorrect implementation of the "Forget about this site" feature in the History pane, intended to remove all saved user data that indicates a user has visited a site. This includes removing any HTTP Strict Transport Security (HSTS) settings received from sites that use it. Due to a bug, sites on the pre-load list also have their HSTS setting removed. On the next visit to that site if the user specifies an http: URL rather than secure https: they will not be protected by the pre-loaded HSTS setting. After that visit the site's HSTS setting will be restored.

Mitigation

Update the affected packages.

Ubuntu 19.04: firefox - 69.0.2+build1-0ubuntu0.19.04.1
Ubuntu 18.04 LTS: firefox - 69.0.2+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS: firefox - 69.0.2+build1-0ubuntu0.16.04.1

Vulnerable software versions

firefox (Ubuntu package): 61.0+build3-0ubuntu0.14.04.2 - 69.0.1+build1-0ubuntu2

CPE2.3

External links

http://usn.ubuntu.com/4122-2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Risk	High
Patch available	YES
Number of vulnerabilities	17
CVE-ID	CVE-2019-5849 CVE-2019-11734 CVE-2019-11735 CVE-2019-11737 CVE-2019-11738 CVE-2019-11740 CVE-2019-11742 CVE-2019-11743 CVE-2019-11744 CVE-2019-11746 CVE-2019-11748 CVE-2019-11749 CVE-2019-11750 CVE-2019-11752 CVE-2019-9812 CVE-2019-11741 CVE-2019-11747
CWE-ID	CWE-125 CWE-119 CWE-264 CWE-79 CWE-416 CWE-732 CWE-200 CWE-843 CWE-399
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	firefox (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.