Mageia 9: Varnish Important DoS Threat MGASA-2025-0239 CVE-2025-8671
mageia
October 17, 2025
MGASA-2025-0239 - Updated varnish & lighttpd packages fix security vulnerability
Summary
Description:
It was discovered that a denial of service attack can be performed on
cache servers that have the HTTP/2 protocol turned on. An attacker can
create a large number of streams and immediately reset them without ever
reaching the maximum number of concurrent streams allowed for the
session, causing the server to consume unnecessary resources processing
requests for which the response will not be delivered (CVE-2025-8671).
References
- https://bugs.mageia.org/show_bug.cgi?id=34587
- https://www.openwall.com/lists/oss-security/2025/08/13/6
- https://www.openwall.com/lists/oss-security/2025/08/16/1
- https://www.cve.org/CVERecord?id=CVE-2025-8671
Topics Covered
Resolution
SRPMS
- 9/core/varnish-7.7.3-1.mga9
- 9/core/lighttpd-1.4.80-1.3.mga9
PREVIOUS
NEXT
Severity
important
Lowest
Low
Medium
High
Critical
Publication date: 17 Oct 2025
URL: https://advisories.mageia.org/MGASA-2025-0239.html
Type: security
CVE: CVE-2025-8671
Topics Covered
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