CVE-2020-28013

Exim 4 before 4.94.2 allows Heap-based Buffer Overflow because it mishandles "-F '.('" on the command line, and thus may allow privilege escalation from any user to root. This occurs because of the interpretation of negative sizes in strncpy.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 31%
Affected Products (NVD)
VendorProductVersion
eximexim
4.00 ≤
𝑥
< 4.94.2
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
fixed
bullseye (security)
4.94.2-7+deb11u4
fixed
sid
4.98-2
fixed
trixie
4.98-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
exim4
bionic
Fixed 4.90.1-1ubuntu1.8
released
focal
Fixed 4.93-13ubuntu1.5
released
groovy
Fixed 4.94-7ubuntu1.2
released
hirsute
Fixed 4.94-15ubuntu1.2
released
impish
Fixed 4.94-15ubuntu1.2
released
jammy
Fixed 4.94-15ubuntu1.2
released
trusty
Fixed 4.82-3ubuntu2.4+esm3
released
xenial
Fixed 4.86.2-2ubuntu2.6+esm1
released
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
exim
Amazon Linux 1
0:4.92-1.33.amzn1
fixed
exim-debuginfo
Amazon Linux 1
0:4.92-1.33.amzn1
fixed
exim-greylist
Amazon Linux 1
0:4.92-1.33.amzn1
fixed
exim-mon
Amazon Linux 1
0:4.92-1.33.amzn1
fixed
exim-mysql
Amazon Linux 1
0:4.92-1.33.amzn1
fixed
exim-pgsql
Amazon Linux 1
0:4.92-1.33.amzn1
fixed
Common Weakness Enumeration
References
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28013-PFPSN.txt
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28013-PFPSN.txt