Bug 1728481 (CVE-2019-13108)

Summary:	CVE-2019-13108 exiv2: integer overflow PngImage::readMetadata leads to denial of service
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jgrulich, michel, rdieter
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	exiv2 0.27.2	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-07-16 14:40:43 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:	1728482
Bug Blocks:	1728496

Description Dhananjay Arunesh 2019-07-10 04:53:27 UTC

An integer overflow in Exiv2 through 0.27.1 allows an attacker to cause a denial of service (SIGSEGV) via a crafted PNG image file, because PngImage::readMetadata mishandles a zero value for iccOffset.

Reference:
https://github.com/Exiv2/exiv2/issues/789
https://github.com/Exiv2/exiv2/pull/794

Comment 1 Dhananjay Arunesh 2019-07-10 04:53:39 UTC

Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1728482]

Comment 2 Riccardo Schirone 2019-07-16 13:39:28 UTC

Upstream patch:
https://github.com/Exiv2/exiv2/commit/8cd95e221889e41e9cc153e2cfb5a7b41c7bc7a4

Comment 3 Riccardo Schirone 2019-07-16 13:47:58 UTC

Statement:

This issue did not affect the versions of exiv2 as shipped with Red Hat Enterprise Linux 6, 7, and 8 as they did not include the vulnerable code.

Comment 4 Product Security DevOps Team 2019-07-16 14:40:43 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-2019-13108

Comment 5 Riccardo Schirone 2019-08-19 15:26:13 UTC

The commits that introduce the vulnerable code are:
https://github.com/Exiv2/exiv2/commit/88f22e13cb1917ac94a95f95f74c9ee93c5472c8 (for the 0.27 version, introduced in 0.27.1)
https://github.com/Exiv2/exiv2/commit/9a38066b8eddf3948696a3362aac29e012ebe690 (on master)

Comment 6 Riccardo Schirone 2019-08-19 15:26:52 UTC

Red Hat Enterprise Linux 7.7 ships exiv2 0.27.0, thus it is not vulnerable to this flaw.