CVE-2020-8793
Published: 25 February 2020
OpenSMTPD before 6.6.4 allows local users to read arbitrary files (e.g., on some Linux distributions) because of a combination of an untrusted search path in makemap.c and race conditions in the offline functionality in smtpd.c.
Mitigation
Ubuntu ships with /proc/sys/fs/protected_hardlinks enabled by default, making this vulnerability not exploitable.
Priority
CVSS 3 base score: 4.7
Status
Package | Release | Status |
---|---|---|
opensmtpd Launchpad, Ubuntu, Debian |
bionic |
Released
(6.0.3p1-1ubuntu0.2)
|
eoan |
Released
(6.0.3p1-6ubuntu0.2)
|
|
focal |
Released
(6.6.4p1-1)
|
|
groovy |
Released
(6.6.4p1-1)
|
|
hirsute |
Released
(6.6.4p1-1)
|
|
impish |
Released
(6.6.4p1-1)
|
|
jammy |
Released
(6.6.4p1-1)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Ignored
(end of standard support, was needed)
|
|
This vulnerability is mitigated in part by the use of hardlink restrictions in Ubuntu. |