Release of Invalid Pointer or Reference The advisory has been revoked - it doesn't affect any version of package exim4 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN10-EXIM4-2976179
- published7 Aug 2022
- disclosed6 Aug 2022
Introduced: 6 Aug 2022
CVE-2022-37451 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream exim4 package and not the exim4 package as distributed by Debian.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2022-37451
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/
- https://cwe.mitre.org/data/definitions/762.html
- https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42
- https://github.com/Exim/exim/compare/exim-4.95...exim-4.96
- https://github.com/Exim/exim/wiki/EximSecurity
- https://github.com/ivd38/exim_invalid_free
- https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html
- 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/
- https://www.exim.org/static/doc/security/
- https://www.openwall.com/lists/oss-security/2022/08/06/1