Remote code execution in Mozilla Thunderbird

1) Heap-based buffer overflow

EUVDB-ID: #VU81244

Risk: Critical

CVSSv4.0: 8.6 [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:A/U:Red]

CVE-ID: CVE-2023-44488,CVE-2023-5217

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted HTML content in vp8 encoding in libvpx. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 102.0 - 115.3.0

CPE2.3

• cpe:2.3:a:mozilla:mozilla_thunderbird:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_thunderbird:102.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_thunderbird:102.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_thunderbird:102.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_thunderbird:102.5.1:*:*:*:*:*:*:*

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2023-44/

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?

Yes. This vulnerability is being exploited in the wild.