Out-of-bounds Write Affecting squid-debuginfo package, versions <7:3.5.20-15.amzn2.1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
7.27% (94th percentile)

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  • Snyk IDSNYK-AMZN2-SQUIDDEBUGINFO-1680946
  • published27 Sept 2021
  • 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 Amazon-Linux:2 squid-debuginfo to version 7:3.5.20-15.amzn2.1 or higher.
This issue was patched in ALAS2-2020-1448.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid-debuginfo package and not the squid-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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