Bug 1806877 (CVE-2020-8794)

Summary:	CVE-2020-8794 opensmtpd: An out-of-bounds read could lead to remote code execution
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	denis, security-response-team, yozone
Target Milestone:	---	Keywords:	Security
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:	2020-03-03 04:31:58 UTC	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:	1809060, 1809061
Bug Blocks:

Description Marian Rehak 2020-02-25 09:07:34 UTC

An out-of-bounds read introduced in commit 80c6a60c, "when peer outputs a multi-line response ..." could lead to remote code execution either
as root, after May 2018 (commit a8e22235, "switch smtpd to new grammar"); or as any non-root user, before May 2018.

Upstream advisory:

https://www.openwall.com/lists/oss-security/2020/02/24/5

Comment 1 Marian Rehak 2020-03-02 11:14:13 UTC

Created opensmtpd tracking bugs for this issue:

Affects: epel-all [bug 1809061]
Affects: fedora-all [bug 1809060]

Comment 2 Product Security DevOps Team 2020-03-03 04:31:58 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.