CVE-2020-12783

Exim through 4.93 has an out-of-bounds read in the SPA authenticator that could result in SPA/NTLM authentication bypass in auths/spa.c and auths/auth-spa.c.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
mitreCNA
---
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CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 88%
VendorProductVersion
eximexim
𝑥
≤ 4.93
debiandebian_linux
8.0
debiandebian_linux
9.0
debiandebian_linux
10.0
canonicalubuntu_linux
14.04
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
19.10
canonicalubuntu_linux
20.04
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
exim4
bullseye
4.94.2-7+deb11u3
fixed
bullseye (security)
4.94.2-7+deb11u4
fixed
bookworm
4.96-15+deb12u5
fixed
bookworm (security)
4.96-15+deb12u5
fixed
sid
4.98-2
fixed
trixie
4.98-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
exim4
focal
Fixed 4.93-13ubuntu1.1
released
eoan
Fixed 4.92.1-1ubuntu3.1
released
bionic
Fixed 4.90.1-1ubuntu1.5
released
xenial
Fixed 4.86.2-2ubuntu2.6
released
trusty
Fixed 4.82-3ubuntu2.4+esm2
released
Common Weakness Enumeration
References
http://www.openwall.com/lists/oss-security/2021/05/04/7
https://bugs.exim.org/show_bug.cgi?id=2571
https://git.exim.org/exim.git/commit/57aa14b216432be381b6295c312065b2fd034f86
https://git.exim.org/exim.git/commit/a04174dc2a84ae1008c23b6a7109e7fa3fb7b8b0
https://lists.debian.org/debian-lts-announce/2020/05/msg00017.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/
https://usn.ubuntu.com/4366-1/
https://www.debian.org/security/2020/dsa-4687
http://www.openwall.com/lists/oss-security/2021/05/04/7
https://bugs.exim.org/show_bug.cgi?id=2571
https://git.exim.org/exim.git/commit/57aa14b216432be381b6295c312065b2fd034f86
https://git.exim.org/exim.git/commit/a04174dc2a84ae1008c23b6a7109e7fa3fb7b8b0
https://lists.debian.org/debian-lts-announce/2020/05/msg00017.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/
https://usn.ubuntu.com/4366-1/
https://www.debian.org/security/2020/dsa-4687