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.
CVSS Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Exim | Exim | < 4.96 |
| Fedoraproject | Fedora | 35 |
Related Weaknesses (CWE)
References
- 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://github.com/ivd38/exim_invalid_freeExploitPatchThird 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.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://www.exim.org/static/doc/security/Vendor Advisory
- https://www.openwall.com/lists/oss-security/2022/08/06/1Mailing ListThird Party Advisory
- 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://github.com/ivd38/exim_invalid_freeExploitPatchThird Party Advisory
FAQ
What is CVE-2022-37451?
CVE-2022-37451 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.
How severe is CVE-2022-37451?
CVE-2022-37451 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-37451?
Check the references section above for vendor advisories and patch information. Affected products include: Exim Exim, Fedoraproject Fedora.