CVE-2019-12522
Published: 15 April 2020
An issue was discovered in Squid through 4.7. When Squid is run as root, it spawns its child processes as a lesser user, by default the user nobody. This is done via the leave_suid call. leave_suid leaves the Saved UID as 0. This makes it trivial for an attacker who has compromised the child process to escalate their privileges back to root.
Priority
Low
CVSS 3 base score: 4.5
Status
| Package | Release | Status |
|---|---|---|
|
squid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| eoan |
Ignored
(reached end-of-life)
|
|
| focal |
Deferred
|
|
| groovy |
Ignored
(reached end-of-life)
|
|
| hirsute |
Ignored
(reached end-of-life)
|
|
| impish |
Deferred
|
|
| jammy |
Deferred
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needed
|
|
| xenial |
Does not exist
|
|
|
squid3 Launchpad, Ubuntu, Debian |
bionic |
Deferred
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| precise |
Ignored
(end of ESM support, was deferred)
|
|
| trusty |
Does not exist
|
|
| upstream |
Needed
|
|
| xenial |
Deferred
|
Notes
| Author | Note |
|---|---|
| mdeslaur | as of 2021-09-07, there is no fix from upstream for this issue |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12522
- https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12522.txt
- NVD
- Launchpad
- Debian