Debian update for firefox-esr



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-29967
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
 firefox-esr (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU53707

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-2021-29967

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 webpage, 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 firefox-esr package to version 78.11.0esr-1~deb10u1.

Vulnerable software versions

firefox-esr (Debian package): 60.8.0esr-1~deb10u1 - 78.10.0esr-1~deb10u1

CPE2.3 External links

https://www.debian.org/security/2021/dsa-4925


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.



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