CVE-2019-12522

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.

• CWE-269

• https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12522.txtThird Party Advisory
• https://security.netapp.com/advisory/ntap-20210205-0006/Third Party Advisory
• https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12522.txtThird Party Advisory
• https://security.netapp.com/advisory/ntap-20210205-0006/Third Party Advisory

Published

Apr 15, 2020

Last Modified

Jun 17, 2026

Status

Modified

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