Bug 1939193 (CVE-2020-36277)

Summary:	CVE-2020-36277 leptonica: DoS via an incorrect left shift in pixConvert2To8 in pixconv.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dchen, jkucera, manisandro
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in leptonica. A incorrect shift in pixConvert2To8 function may allow an attacker to crash an application using leptonica. The highest threat from this vulnerability is to the availability of the application.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-28 14:08:02 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:	1939194, 1939195, 1939196, 1942945
Bug Blocks:	1939215

Description Guilherme de Almeida Suckevicz 2021-03-15 17:46:39 UTC

Leptonica before 1.80.0 allows a denial of service (application crash) via an incorrect left shift in pixConvert2To8 in pixconv.c.

Reference:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21997

Upstream patch:
https://github.com/DanBloomberg/leptonica/pull/499

Comment 1 Guilherme de Almeida Suckevicz 2021-03-15 17:47:05 UTC

Created leptonica tracking bugs for this issue:

Affects: epel-7 [bug 1939196]
Affects: fedora-all [bug 1939194]


Created mingw-leptonica tracking bugs for this issue:

Affects: fedora-all [bug 1939195]