Improper Input Validation Affecting squid-migration-script package, versions <7:3.5.20-17.amzn2.7.10


Severity

Recommended
critical

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.7% (81st percentile)

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  • Snyk IDSNYK-AMZN2-SQUIDMIGRATIONSCRIPT-6037089
  • published27 Oct 2023
  • disclosed26 Nov 2019

Introduced: 26 Nov 2019

CVE-2019-18678  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 squid-migration-script to version 7:3.5.20-17.amzn2.7.10 or higher.
This issue was patched in ALAS2-2023-2318.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid-migration-script package and not the squid-migration-script 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 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled content at arbitrary URLs. Effects are isolated to software between the attacker client and Squid. There are no effects on Squid itself, nor on any upstream servers. The issue is related to a request header containing whitespace between a header name and a colon.

CVSS Scores

version 3.1