CVE-2022-37451

EUVD-2022-40077
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 90%
Affected Products (NVD)
VendorProductVersion
eximexim
𝑥
< 4.96
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
exim4
bookworm
4.96-15+deb12u5
fixed
bookworm (security)
4.96-15+deb12u5
fixed
bullseye
4.94.2-7+deb11u3
not-affected
bullseye (security)
4.94.2-7+deb11u4
fixed
buster
not-affected
sid
4.98-2
fixed
trixie
4.98-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
exim4
bionic
not-affected
focal
not-affected
jammy
not-affected
kinetic
not-affected
trusty
not-affected
xenial
not-affected
Common Weakness Enumeration
References
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
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