Remote code execution in Mozilla Firefox



Published: 2022-03-05
Risk Critical
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2022-26485
CVE-2022-26486
CWE-ID CWE-416
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerability #2 is being exploited in the wild.
Vulnerable software
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Mozilla Firefox
Client/Desktop applications / Web browsers

Firefox ESR
Client/Desktop applications / Web browsers

Firefox for Android
Mobile applications / Apps for mobile phones

Vendor Mozilla

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU61032

Risk: Critical

CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2022-26485

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 processing XSLT parameter. A remote attacker can trick the victim to open a specially crafted web page, trigger a use-after-free error and execute arbitrary code on the system.

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

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 9.0.1 - 97.0.1

Firefox ESR: 78.0 - 78.15.0, 91.0 - 91.6.0

Firefox for Android: 79.0.0 - 97.2.0


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2022-09/

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?

Yes. This vulnerability is being exploited in the wild.

2) Use-after-free

EUVDB-ID: #VU61033

Risk: Critical

CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2022-26486

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 processing messages in the WebGPU IPC framework. A remote attacker can trick the victim to open a specially crafted web page, trigger a use-after-free error and execute arbitrary code on the system.

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

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 9.0.1 - 97.0.1

Firefox ESR: 78.0 - 78.15.0, 91.0 - 91.6.0

Firefox for Android: 79.0.0 - 97.2.0


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2022-09/

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?

Yes. This vulnerability is being exploited in the wild.



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