CVE-2022-37451

high

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.

References

https://www.openwall.com/lists/oss-security/2022/08/06/1

https://www.exim.org/static/doc/security/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XSWDF4QEXD4TDWQLYQOWCHBJKTDQR4Z7/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LETR5CVDPFOFQHXCJP6NFLG52JZHQYDY/

https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html

https://github.com/ivd38/exim_invalid_free

https://github.com/Exim/exim/wiki/EximSecurity

https://github.com/Exim/exim/compare/exim-4.95...exim-4.96

https://github.com/Exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42

https://cwe.mitre.org/data/definitions/762.html

Details

Source: Mitre, NVD

Published: 2022-08-06

Updated: 2023-11-07

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High