Bug 1661612 (CVE-2018-5817)

Summary:	CVE-2018-5817 LibRaw: DoS in unpacked_load_raw function in internal/dcraw_common.cpp
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	debarshir
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	LibRaw 0.19.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-04-22 10:31:52 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:	1654688, 1661613, 1661614, 1661615, 1663174
Bug Blocks:	1661524

Description Laura Pardo 2018-12-21 18:02:32 UTC

LibRaw is vulnerable to a denial of service, caused by an error in the unpacked_load_raw function in internal/dcraw_common.cpp. By persuading a victim to open a specially-crafted file, a remote attacker could exploit this vulnerability to cause the application to enter into an infinite loop.


References:
https://www.flexera.com/company/secunia-research/advisories/SR-2018-27.html

Comment 1 Laura Pardo 2018-12-21 18:02:57 UTC

Created LibRaw tracking bugs for this issue:

Affects: epel-6 [bug 1661615]
Affects: fedora-28 [bug 1661613]


Created mingw-LibRaw tracking bugs for this issue:

Affects: fedora-all [bug 1661614]

Comment 2 Riccardo Schirone 2019-01-03 10:27:08 UTC

Upstream patch:
https://github.com/LibRaw/LibRaw/commit/e67a9862d10ebaa97712f532eca1eb5e2e410a22

Comment 4 Riccardo Schirone 2019-01-03 11:17:10 UTC

Function unpacked_load_raw() execute "maximum"-times a simple loop, where "maximum" is variable set during the identify() function. A crafted raw image may set it to a very high value, resulting in a very long time to parse the image.

Comment 5 Riccardo Schirone 2019-01-03 11:17:54 UTC

Statement:

This issue did not affect the versions of LibRaw as shipped with Red Hat Enterprise Linux 7 as they did not include the vulnerable code.

Comment 6 Debarshi Ray 2019-02-01 14:07:59 UTC

Fixed in LibRaw-0.19.1

Comment 7 Product Security DevOps Team 2020-04-22 10:31:52 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-2018-5817