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Ubuntu: USN-4213-1 (CVE-2019-18678): Squid vulnerabilities

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Ubuntu: USN-4213-1 (CVE-2019-18678): Squid vulnerabilities

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
11/14/2019
Created
12/07/2019
Added
12/05/2019
Modified
09/12/2020

Description

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.

Solution(s)

  • ubuntu-upgrade-squid
  • ubuntu-upgrade-squid3

References

  • USN-4213-1
  • USN-4446-1
  • CVE-2019-18678

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