vulnerability
Alma Linux: CVE-2019-18678: Moderate: squid:4 security, bug fix, and enhancement update (ALSA-2020-4743)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:P/A:N) | Nov 26, 2019 | May 4, 2022 | Aug 11, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
Nov 26, 2019
Added
May 4, 2022
Modified
Aug 11, 2025
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.
Solutions
alma-upgrade-libecapalma-upgrade-libecap-devel
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