Bug 1838644 (CVE-2020-12105)

Summary:	CVE-2020-12105 openconnect: incorrect use of negative return values from X509_check_ functions can lead to MITM attacks
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dwmw2, nmavrogi
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2020-05-21 15:15:32 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1838646, 1838647
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2020-05-21 13:41:26 UTC

OpenConnect through 8.08 mishandles negative return values from X509_check_ function calls, which might assist attackers in performing man-in-the-middle attacks.

Reference:
https://gitlab.com/openconnect/openconnect/-/merge_requests/96

Comment 1 Guilherme de Almeida Suckevicz 2020-05-21 13:42:10 UTC

Created openconnect tracking bugs for this issue:

Affects: epel-all [bug 1838647]
Affects: fedora-all [bug 1838646]

Comment 2 Product Security DevOps Team 2020-05-21 15:15:32 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.