CVE-2018-1172

squid: Incorrect pointer handling when processing ESI responses allows denial of service

Loading…

Severity

Low

Red Hat Product Security

5.9

CVSS 3.0

Review impact separately from score.

Published · April 18, 2018

Updated · November 22, 2025

Description

it was found that Squid, when used as a reverse proxy, did not handle ESI responses properly. A malicious web server could use this flaw to crash Squid.

Statement

This issue affects the versions of squid and squid34 as shipped with Red Hat Enterprise Linux 6. Red Hat Enterprise Linux 6 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 5.9
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference