HTTP Request Smuggling Affecting squid:4/libecap package, versions <0:1.0.1-2.module_el8.6.0+2741+01592ae8

Q: How to fix?

<p>Upgrade <code>AlmaLinux:8</code> <code>squid:4/libecap</code> to version 0:1.0.1-2.module_el8.6.0+2741+01592ae8 or higher.<br>This issue was patched in <code>ALSA-2020:4743</code>.</p>

Threat Intelligence

0.75% (82^nd percentile)

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Snyk ID SNYK-ALMALINUX8-SQUID-5617095
published 28 May 2023
disclosed 3 Nov 2020

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Introduced: 3 Nov 2020

CVE-2019-18678 Open this link in a new tab CWE-444 Open this link in a new tab

How to fix?

Upgrade AlmaLinux:8 squid:4/libecap to version 0:1.0.1-2.module_el8.6.0+2741+01592ae8 or higher.
This issue was patched in ALSA-2020:4743.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid:4/libecap package and not the squid:4/libecap package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 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.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Network
Attack Complexity (AC)

Low
Privileges Required (PR)

None
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

None
Integrity (I)

Low
Availability (A)

None