Home/CVE/Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name
CVE

CVE-2022-37452

Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name

Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.

CRITICAL · CVSS 9.8 EPSS 0.04696
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

2
exim< 4.95
debian linuxall versions
⚠

Public Exploits & PoCs

1
pocgithub.com · exim_overflowgithub.com
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD07 Aug 2022 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

1
usnUSN-5574-1
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/Exim/exim/commit/d4bc023436e4cce7c23c5f8bb5199e178b4cc743PatchThird Party Advisory
https://github.com/Exim/exim/compare/exim-4.94...exim-4.95PatchRelease NotesThird Party Advisory
https://github.com/Exim/exim/wiki/EximSecurityRelease NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/08/msg00014.htmlMailing ListThird Party Advisory
https://www.exim.org/static/doc/security/Vendor Advisory
https://www.openwall.com/lists/oss-security/2022/08/06/8Mailing ListThird Party Advisory
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