Bug 1388787 – CVE-2016-6911 gd, php: Missing check for OOB read in dynamicGetbuf()

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Bug 1388787 - (CVE-2016-6911) CVE-2016-6911 gd, php: Missing check for OOB read in dynamicGetbuf()

Summary:	CVE-2016-6911 gd, php: Missing check for OOB read in dynamicGetbuf()

Status:	CLOSED WONTFIX

Aliases:	CVE-2016-6911

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20161015,repor...
Keywords:	Security

Depends On:	1388788 1388790
Blocks:	1388796
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Reported:	2016-10-26 04:11 EDT by Adam Mariš
Modified:	2016-12-15 23:30 EST (History)
CC List:	19 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in gd. The function dynamicGetbuf() failed to check for out of bounds reads. An attacker could create a crafted image that would lead to a crash or, potentially, information disclosure.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-12-15 23:30:55 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
CVE-2016-6911 patch (14.69 KB, patch) 2016-10-26 04:17 EDT, Adam Mariš	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Adam Mariš 2016-10-26 04:11:09 EDT

It was found that dynamicGetbuf() doesn't check for out-of-bounds read and returns wrong return code.

Comment 1 Adam Mariš 2016-10-26 04:11:56 EDT

Created gd tracking bugs for this issue:

Affects: fedora-all [bug 1388788]

Comment 2 Adam Mariš 2016-10-26 04:12:07 EDT

Created php tracking bugs for this issue:

Affects: fedora-all [bug 1388790]

Comment 3 Adam Mariš 2016-10-26 04:17 EDT

Created attachment 1214203 [details]
CVE-2016-6911 patch

Comment 4 Marek Skalický 2016-12-05 04:52:31 EST

Why the patch is not published to upstream?
Who created the fix please?

Comment 5 Adam Mariš 2016-12-05 05:42:32 EST

(In reply to Marek Skalický from comment #4)
> Why the patch is not published to upstream?
> Who created the fix please?

I took it from https://bugzilla.suse.com/show_bug.cgi?id=1005274#c0

Comment 6 Marek Skalický 2016-12-06 06:21:05 EST

Pull request to upstream
https://github.com/libgd/libgd/pull/353

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