CVE-2023-4050

HIGH

Firefox < 116 - Out-of-bounds Write via Untrusted Input Stream

Title source: llm

Description

In some cases, an untrusted input stream was copied to a stack buffer without checking its size. This resulted in a potentially exploitable crash which could have led to a sandbox escape. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.

References (8)

Core 8

Core References

Issue Tracking, Permissions Required

https://bugzilla.mozilla.org/show_bug.cgi?id=1843038

Third Party Advisory

https://www.debian.org/security/2023/dsa-5464

Third Party Advisory

https://www.debian.org/security/2023/dsa-5469

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2023-29/

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2023-30/

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2023-31/

Mailing List

https://lists.debian.org/debian-lts-announce/2023/08/msg00008.html

Mailing List

https://lists.debian.org/debian-lts-announce/2023/08/msg00010.html

Scores

CVSS v3 7.5

EPSS 0.0340

EPSS Percentile 87.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-787

Status published

Products (3)

debian/debian_linux 11.0

debian/debian_linux 12.0

mozilla/firefox < 116.0

Published Aug 01, 2023

Tracked Since Feb 18, 2026