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CVE-2019-12522

4.5 · MEDIUM

An issue was discovered in Squid through 4.7.

Published Apr 15, 2020CWE-269EPSS 0.34%

Overview

CVE-2019-12522 is a medium-severity vulnerability. It was published on April 15, 2020 and has a CVSS 3.1 base score of 4.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12522.txtRefsecurity.netapp.com/advisory/ntap-20210205-0006/Refgitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12522.txtRefsecurity.netapp.com/advisory/ntap-20210205-0006/

How CyberStrike helps

Frequently asked questions

What is CVE-2019-12522?

CVE-2019-12522 is a medium-severity vulnerability. It was published on April 15, 2020 and has a CVSS 3.1 base score of 4.5 (MEDIUM).

How severe is CVE-2019-12522?

This vulnerability has a CVSS 3.1 base score of 4.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-12522?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-12522?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-12522 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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