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Status published
High
CVE-2022-37451
Exim before 4.96 has an invalid free in pam_converse in...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/Exim/exim/wiki/EximSecurity
- https://www.exim.org/static/doc/security/
- https://github.com/ivd38/exim_invalid_free
- https://www.openwall.com/lists/oss-security/2022/08/06/1
- https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html
- https://cwe.mitre.org/data/definitions/762.html
- https://github.com/Exim/exim/compare/exim-4.95...exim-4.96
- https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/
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Affected Vendor
exim
View all reports →Affected Software
exim, fedora
Vulnerable Versions:
0, 35, 36
Timeline
Official Publish:
August 6th, 2022
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.