CVSS 3.1
4.5 mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:LCVE-2019-12522
Medium (4.5) in squid-cache squid. EPSS 0.3% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-31)
- CWE
- CWE-269
- Published
- Modified
- Record from
- the NVD, synced
Affected
- squid-cache:squid