Bug 1661555 (CVE-2018-20337)

Summary:	CVE-2018-20337 LibRaw: stack-based buffer overflow in the parse_makernote function of dcraw_common.cpp
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	debarshir
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	LibRaw 0.19.2	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-04-22 04:32:15 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:	1661556, 1661557, 1661558, 1663138, 1671744
Bug Blocks:	1661524

Description Laura Pardo 2018-12-21 14:08:38 UTC

A flaw was found in LibRaw 0.19.1. A stack-based buffer overflow in the parse_makernote function of dcraw_common.cpp. Crafted input will lead to a denial of service. 


References:
https://github.com/LibRaw/LibRaw/issues/192

Upstream Patch:
https://github.com/LibRaw/LibRaw/commit/fbf60377c006eaea8d3eca3f5e4c654909dcdfd2

Comment 1 Laura Pardo 2018-12-21 14:09:00 UTC

Created LibRaw tracking bugs for this issue:

Affects: epel-6 [bug 1661558]
Affects: fedora-all [bug 1661557]


Created mingw-LibRaw tracking bugs for this issue:

Affects: fedora-all [bug 1661556]

Comment 2 Riccardo Schirone 2019-01-03 09:50:24 UTC

Function parse_makernote() in internal/dcraw_common.cpp does not correctly sanitize the ynum_len when dealing with FUJI raw images, possibly causing a stack-based buffer overflow.

Comment 3 Riccardo Schirone 2019-01-03 09:51:46 UTC

Statement:

This issue did not affect the versions of LibRaw as shipped with Red Hat Enterprise Linux 7 as they did not include support for Fuji maker notes.

Comment 5 Debarshi Ray 2019-02-01 13:49:32 UTC

This is fixed in LibRaw-0.19.2

Comment 7 Product Security DevOps Team 2020-04-22 04:32:15 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-20337

Comment 8 errata-xmlrpc 2020-04-28 15:50:46 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1766 https://access.redhat.com/errata/RHSA-2020:1766