Vulnerability Monitor

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CVE-2023-6858

Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

Published

2023-12-19T14:15:07.420

Last Modified

2025-05-07T21:15:59.953

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

Weaknesses

Type: Primary
CWE-787
Type: Secondary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 121.0	Yes
Application	mozilla	firefox_esr	< 115.6	Yes
Application	mozilla	thunderbird	< 115.6	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	debian	debian_linux	11.0	Yes
Operating System	debian	debian_linux	12.0	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1826791 Issue Tracking, Permissions Required ([email protected])
https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html Mailing List, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/202401-10 Third Party Advisory ([email protected])
https://www.debian.org/security/2023/dsa-5581 Third Party Advisory ([email protected])
https://www.debian.org/security/2023/dsa-5582 Third Party Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2023-54/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2023-55/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2023-56/ Vendor Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1826791 Issue Tracking, Permissions Required (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202401-10 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2023/dsa-5581 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2023/dsa-5582 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2023-54/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2023-55/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2023-56/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)