What’s Vulnerable › Vulnerabilities

CVE-2018-19132

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-11-09 · updated 2026-06-17
• Weakness: CWE-772

Description

Squid before 4.4, when SNMP is enabled, allows a denial of service (Memory Leak) via an SNMP packet.

Affected products

• Debian Linux: 8.0
• Squid: before 4.4 — fixed in 4.4

How to fix

Upgrade to a fixed version: Squid 4.4. Check the vendor advisory for mitigations.

References

• http://www.squid-cache.org/Advisories/SQUID-2018_5.txt
• http://www.squid-cache.org/Versions/v5/changesets/squid-5-644131ff1e00c1895d77561f561d29c104ba6b11.patch
• https://github.com/squid-cache/squid/pull/313
• https://lists.debian.org/debian-lts-announce/2018/11/msg00032.html
• https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
• https://usn.ubuntu.com/4059-1/
• http://www.squid-cache.org/Advisories/SQUID-2018_5.txt
• http://www.squid-cache.org/Versions/v5/changesets/squid-5-644131ff1e00c1895d77561f561d29c104ba6b11.patch
• https://github.com/squid-cache/squid/pull/313
• https://lists.debian.org/debian-lts-announce/2018/11/msg00032.html
• https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
• https://usn.ubuntu.com/4059-1/

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