Bug 897928 (CVE-2023-26249)

Summary:	<net-dns/knot-resolver-5.6.0: DoS via many TCP connections
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	CONFIRMED ---
Severity:	minor	CC:	matthew
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://www.knot-resolver.cz/2023-01-26-knot-resolver-5.6.0.html
Whiteboard:	B3 [glsa?]
Package list:		Runtime testing required:	---
Bug Depends on:	898036
Bug Blocks:

Description John Helmert III archtester

2023-02-26 17:49:39 UTC

CVE-2023-26249:

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response.

Please stabilize 5.6.0.

Comment 1 Larry the Git Cow gentoo-dev

2023-02-27 18:22:34 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=1175a164201bad5751040ae5d4a008a31a783332

commit 1175a164201bad5751040ae5d4a008a31a783332
Author:     Matthew Smith <matthew@gentoo.org>
AuthorDate: 2023-02-27 18:22:19 +0000
Commit:     Matthew Smith <matthew@gentoo.org>
CommitDate: 2023-02-27 18:22:19 +0000

    net-dns/knot-resolver: drop 5.5.3
    
    Bug: https://bugs.gentoo.org/897928
    Signed-off-by: Matthew Smith <matthew@gentoo.org>

 net-dns/knot-resolver/Manifest                   |  2 -
 net-dns/knot-resolver/knot-resolver-5.5.3.ebuild | 93 ------------------------
 2 files changed, 95 deletions(-)