Bug 1228257 (CVE-2024-1975)

Summary:	VUL-0: CVE-2024-1975: bind: SIG(0) can be used to exhaust CPU resources
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Jorik Cronenberg <jorik.cronenberg>
Status:	NEW ---	QA Contact:	Security Team bot <security-team>
Severity:	Major
Priority:	P2 - High	CC:	abergmann
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/414981/
Whiteboard:	CVSSv3.1:SUSE:CVE-2024-1975:7.5:(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Attachments:	upstream patch

Description SMASH SMASH 2024-07-24 06:21:43 UTC

If a server hosts a zone containing a "KEY" Resource Record, or a resolver DNSSEC-validates a "KEY" Resource Record from a DNSSEC-signed domain in cache, a client can exhaust resolver CPU resources by sending a stream of SIG(0) signed requests.

This issue affects BIND 9 versions:
9.0.0 -> 9.11.37
9.16.0 -> 9.16.50
9.18.0 -> 9.18.27
9.19.0 -> 9.19.24
9.9.3-S1 -> 9.11.37-S1
9.16.8-S1 -> 9.16.49-S1
9.18.11-S1 -> 9.18.27-S1

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-1975
https://seclists.org/oss-sec/2024/q3/101
https://kb.isc.org/docs/cve-2024-0760
https://kb.isc.org/docs/cve-2024-4076
https://kb.isc.org/docs/cve-2024-1975
https://kb.isc.org/docs/cve-2024-1737
https://downloads.isc.org/isc/bind9/9.18.28/patches/
http://www.openwall.com/lists/oss-security/2024/07/23/1
https://www.cve.org/CVERecord?id=CVE-2024-1975
https://bugzilla.redhat.com/show_bug.cgi?id=2298901

Comment 1 Alexander Bergmann 2024-07-24 07:11:44 UTC

Created attachment 876222 [details]
upstream patch

All active code streams, including LTSS, are affected by this issue.