Out-of-bounds Write Affecting squid package, versions <7:4.4-8.module+el8.2.0+7611+d512f060.1


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
1.78% (89th percentile)

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  • Snyk IDSNYK-ORACLE8-SQUID-2556450
  • published10 Apr 2022
  • disclosed15 Apr 2020

Introduced: 15 Apr 2020

CVE-2019-12519  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:8 squid to version 7:4.4-8.module+el8.2.0+7611+d512f060.1 or higher.
This issue was patched in ELSA-2020-2041.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid package and not the squid package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

An issue was discovered in Squid through 4.7. When handling the tag esi:when when ESI is enabled, Squid calls ESIExpression::Evaluate. This function uses a fixed stack buffer to hold the expression while it's being evaluated. When processing the expression, it could either evaluate the top of the stack, or add a new member to the stack. When adding a new member, there is no check to ensure that the stack won't overflow.

CVSS Scores

version 3.1