CVE-2023-6862

Summary

A use-after-free was identified in the nsDNSService::Init. This issue appears to manifest rarely during start-up. This vulnerability affects Firefox ESR < 115.6 and Thunderbird < 115.6.

Affected Software

Weaknesses

• Use-after-free in nsDNSService

ADP Enrichment

CVE Program Container

Additional References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1868042
• https://www.mozilla.org/security/advisories/mfsa2023-54/
• https://www.mozilla.org/security/advisories/mfsa2023-55/
• https://www.debian.org/security/2023/dsa-5581
• https://www.debian.org/security/2023/dsa-5582
• https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
• https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
• https://security.gentoo.org/glsa/202401-10

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1868042
• https://www.mozilla.org/security/advisories/mfsa2023-54/
• https://www.mozilla.org/security/advisories/mfsa2023-55/
• https://www.debian.org/security/2023/dsa-5581
• https://www.debian.org/security/2023/dsa-5582
• https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
• https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
• https://security.gentoo.org/glsa/202401-10

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