Red Hat Enterprise Linux 8.2 update for firefox

Published: 2022-02-14

Risk	High
Patch available	YES
Number of vulnerabilities	7
CVE-ID	CVE-2022-22760 CVE-2022-22759 CVE-2022-22764 CVE-2022-22756 CVE-2022-22761 CVE-2022-22754 CVE-2022-22763
CWE-ID	CWE-200 CWE-264 CWE-119 CWE-357 CWE-254 CWE-664
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	firefox (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Enterprise Linux Server - TUS Operating systems & Components / Operating system
Vendor	Red Hat Inc.

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU60409

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-2022-22760

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 the way Firefox displays error messages in cross-origin responses, when importing resources using Web Workers. A remote attacker can distinguish the difference between application/javascript responses and non-script responses and learn information cross-origin.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 91.2.0-4.el8_2 - 91.5.0-1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2022:0512

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) Sandbox restrictions bypass

EUVDB-ID: #VU60406

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22759

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to the way iframes are handled by the browser. If a document created a sandboxed iframe without allow-scripts, and subsequently appended an element to the iframe's document that e.g. had a JavaScript event handler - the event handler would have run despite the iframe's sandbox.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 91.2.0-4.el8_2 - 91.5.0-1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2022:0512

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: #VU60413

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-2022-22764

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 a boundary error when processing HTML content. A remote attacker can create a specially crafted website, 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

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 91.2.0-4.el8_2 - 91.5.0-1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2022:0512

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) Insufficient UI Warning of Dangerous Operations

EUVDB-ID: #VU60398

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-2022-22756

CWE-ID: CWE-357 - Insufficient UI Warning of Dangerous Operations

Exploit availability: No

Description

The vulnerability allows a remote attacker execute arbitrary code.

The vulnerability exists due to browser fails to properly identify a malicious file during drag and drop operations. A remote attacker can trick the victim to drag and drop an image to their desktop or other folder and change the resulting object into an executable script which will be executed after the user clicked on it.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 91.2.0-4.el8_2 - 91.5.0-1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2022:0512

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) Security features bypass

EUVDB-ID: #VU60411

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22761

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform unauthorized actions.

The vulnerability exists due to frame-ancestors Content Security Policy directive was not enforced for framed extension pages (pages with a moz-extension:// scheme). A remote attacker perform unauthorized actions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 91.2.0-4.el8_2 - 91.5.0-1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2022:0512

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) Security restrictions bypass

EUVDB-ID: #VU60395

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-2022-22754

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists in the way Firefox handles extensions updates. A remote attacker can trick the victim to install a browser extension of a particular type and during auto-update bypass the prompt which grants the new version the new requested permissions. As a result an extension with limited permissions can be used to compromise the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 91.2.0-4.el8_2 - 91.5.0-1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2022:0512

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) Improper control of a resource through its lifetime

EUVDB-ID: #VU60414

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22763

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an error when handling script execution during invalid object state. A remote attacker can cause a script to run late in the lifecycle, at a point after where it should not be possible.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 91.2.0-4.el8_2 - 91.5.0-1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

CPE2.3

External links

http://access.redhat.com/errata/RHSA-2022:0512

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.