Home/CVE/Exim before 4.96 has an invalid free in pam_converse in auths/call_pam.c because store_free is not used after store_mall
CVE

CVE-2022-37451

Exim before 4.96 has an invalid free in pam_converse in auths/call_pam.c because store_free is not used after store_mall

Exim before 4.96 has an invalid free in pam_converse in auths/call_pam.c because store_free is not used after store_malloc.

HIGH · CVSS 7.5 EPSS 0.06728
Act now
  • EPSS percentile: top 9% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-763Release of Invalid Pointer or Reference
▤

Affected Products & Versions

2
exim< 4.96
fedoraproject fedoraall versions
⚠

Public Exploits & PoCs

1
pocgithub.com · exim_invalid_freegithub.com
▣

Scoring & Timeline

7.5
HIGH · 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 NVD06 Aug 2022 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cwe.mitre.org/data/definitions/762.htmlThird Party Advisory
https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42PatchThird Party Advisory
https://github.com/Exim/exim/compare/exim-4.95...exim-4.96Release NotesThird Party Advisory
https://github.com/Exim/exim/wiki/EximSecurityRelease NotesThird Party Advisory
https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.htmlMailing ListRelease NotesVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/
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