Multiple vulnerabilities in Mozilla Firefox

1) Cross-origin policy bypass

EUVDB-ID: #VU15489

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12391

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to audio data can be accessed across origins in violation of security policies during HTTP Live Stream playback on Firefox for Android. A remote attacker can trick the victim into visiting a specially crafted website, bypass cross-origin policies and conduct further attacks.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

2) Poor event handling

EUVDB-ID: #VU15490

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-12392

CWE-ID: CWE-388 - Error Handling

Exploit availability: No

Description

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

The weakness exists due to poor event handling when manipulating user events in nested loops while opening a document through script. A remote attacker can trick the victim into visiting a specially crafted website and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

3) Integer overflow

EUVDB-ID: #VU15491

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-12393

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The weakness exists due to integer overflow during the conversion of scripts to an internal UTF-16 representation. A remote attacker can trick the victim into visiting a specially crafted website, trigger out-of-bounds write and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

4) Security restrictions bypass

EUVDB-ID: #VU15494

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12395

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to an error in WebExtension. A remote attacker can trick the victim into visiting a specially crafted website, rewrite the Host request headers using the webRequest API and bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

5) Privilege escalation

EUVDB-ID: #VU15495

Risk: Low

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12396

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The weakness exists due to a WebExtension can run content scripts in disallowed contexts following navigation or other events. A remote attacker can trick the victim into visiting a specially crafted website containing WebExtension where content scripts should not be run and gain elevated privileges.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

6) Security restrictions bypass

EUVDB-ID: #VU15496

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12397

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user. A remote attacker can trick the victim into visiting a specially crafted website, run content scripts in local pages without permission warnings when a local file is opened.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

7) Security restrictions bypass

EUVDB-ID: #VU15497

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12398

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to an error when using the reflected URL in some special resource URIs, such as chrome. A remote attacker can trick the victim into visiting a specially crafted website, inject stylesheets and bypass Content Security Policy (CSP).

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

8) Spoofing attack

EUVDB-ID: #VU15498

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12399

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to conduct spoofing attack on the target system.

The weakness exists due to the API accepts a title argument when a new protocol handler is registered. A remote attacker can trick the victim into visiting a specially crafted website, users about which domain is registering the new protocol to spoof protocol registration notification bar

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

9) Information disclosure

EUVDB-ID: #VU15499

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12400

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists in private browsing mode on Firefox for Android due to favicons are cached in the cache/icons folder as they are in non-private mode. A remote attacker can trick the victim into visiting a specially crafted website and gain access to arbitrary data during private browsing sessions.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

10) Improper input validation

EUVDB-ID: #VU15500

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12401

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to an error when using special resource URIs. A remote attacker can trick the victim into visiting a specially crafted website and cause a non-exploitable crash if loaded with optional parameters following a '?' in the parsed string.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

11) Information disclosure

EUVDB-ID: #VU15502

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12402

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to SameSite cookies are sent on cross-origin requests when the "Save Page As..." menu item is selected to save a page. A remote attacker can trick the victim into visiting a specially crafted website and gain access to SameSite cookies.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

12) Security restrictions bypass

EUVDB-ID: #VU15503

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12403

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to the mixed content warning is not displayed to users if a site is loaded over a HTTPS connection but loads a favicon resource over HTTP. A remote attacker can trick the victim into visiting a specially crafted website and bypass security restrictions.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

13) Memory corruption

EUVDB-ID: #VU15492

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-12388

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 weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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

14) Memory corruption

EUVDB-ID: #VU15493

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-12390

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 weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

CPE2.3

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

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	14
CVE-ID	CVE-2018-12391 CVE-2018-12392 CVE-2018-12393 CVE-2018-12395 CVE-2018-12396 CVE-2018-12397 CVE-2018-12398 CVE-2018-12399 CVE-2018-12400 CVE-2018-12401 CVE-2018-12402 CVE-2018-12403 CVE-2018-12388 CVE-2018-12390
CWE-ID	CWE-20 CWE-388 CWE-787 CWE-190 CWE-200 CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Mozilla Firefox Client/Desktop applications / Web browsers
Vendor	Mozilla