Bug 2237411 (CVE-2023-41910)

Summary:	CVE-2023-41910 lldpd: CDP PDU Packet cdp.c out-of-bounds read
Product:	[Other] Security Response	Reporter:	Avinash Hanwate <ahanwate>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	lldpd 1.0.17	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in lldpd due to an out-of-bounds read in cdp_decode at daemon/protocols/cdp.c. By sending a specially crafted CDP PDU packet with specific CDP_TLV_ADDRESSES TLVs, a remote attacker could cause a denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2240980, 2240981
Bug Blocks:	2237414

Description Avinash Hanwate 2023-09-05 12:02:11 UTC

An issue was discovered in lldpd before 1.0.17. By crafting a CDP PDU packet with specific CDP_TLV_ADDRESSES TLVs, a malicious actor can remotely force the lldpd daemon to perform an out-of-bounds read on heap memory. This occurs in cdp_decode in daemon/protocols/cdp.c.

https://github.com/lldpd/lldpd/commit/a9aeabdf879c25c584852a0bb5523837632f099b
https://github.com/lldpd/lldpd/releases/tag/1.0.17

Comment 2 Marian Rehak 2023-09-27 14:20:39 UTC

Created lldpd tracking bugs for this issue:

Affects: epel-all [bug 2240980]
Affects: fedora-all [bug 2240981]