CVE-2020-28018

Exim 4 before 4.94.2 allows Use After Free in smtp_reset in certain situations that may be common for builds with OpenSSL.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 98%
VendorProductVersion
eximexim
4.90 ≤
𝑥
< 4.94.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
exim4
bullseye
4.94.2-7+deb11u3
fixed
stretch
not-affected
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
jammy
Fixed 4.94-15ubuntu1.2
released
impish
Fixed 4.94-15ubuntu1.2
released
hirsute
Fixed 4.94-15ubuntu1.2
released
groovy
Fixed 4.94-7ubuntu1.2
released
focal
Fixed 4.93-13ubuntu1.5
released
bionic
Fixed 4.90.1-1ubuntu1.8
released
xenial
not-affected
trusty
not-affected
Common Weakness Enumeration
References
http://www.openwall.com/lists/oss-security/2021/05/11/14
http://www.openwall.com/lists/oss-security/2021/05/11/15
http://www.openwall.com/lists/oss-security/2021/05/11/17
http://www.openwall.com/lists/oss-security/2021/05/11/5
http://www.openwall.com/lists/oss-security/2021/05/11/6
http://www.openwall.com/lists/oss-security/2021/05/12/2
http://www.openwall.com/lists/oss-security/2021/05/12/3
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txt
http://www.openwall.com/lists/oss-security/2021/05/11/14
http://www.openwall.com/lists/oss-security/2021/05/11/15
http://www.openwall.com/lists/oss-security/2021/05/11/17
http://www.openwall.com/lists/oss-security/2021/05/11/5
http://www.openwall.com/lists/oss-security/2021/05/11/6
http://www.openwall.com/lists/oss-security/2021/05/12/2
http://www.openwall.com/lists/oss-security/2021/05/12/3
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txt