Bug 2294667 (CVE-2024-28820)

Summary:	CVE-2024-28820 openvpn-auth-ldap: buffer overflow
Product:	[Other] Security Response	Reporter:	Patrick Del Bello <pdelbell>
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:		Doc Type:	If docs needed, set a value
Doc Text:		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:	2294669, 2294668
Bug Blocks:

Description Patrick Del Bello 2024-06-28 01:24:16 UTC

Buffer overflow in the extract_openvpn_cr function in openvpn-cr.c in openvpn-auth-ldap (aka the Three Rings Auth-LDAP plugin for OpenVPN) 2.0.4 allows attackers with a valid LDAP username and who can control the challenge/response password field to pass a string with more than 14 colons into this field and cause a buffer overflow.

https://github.com/threerings/openvpn-auth-ldap/pull/92
https://github.com/threerings/openvpn-auth-ldap/tags

Comment 1 Patrick Del Bello 2024-06-28 01:24:31 UTC

Created openvpn-auth-ldap tracking bugs for this issue:

Affects: epel-all [bug 2294669]
Affects: fedora-all [bug 2294668]