Bug 1486735 (CVE-2017-2870)

Summary: CVE-2017-2870 gdk-pixbuf2: Integer overflow in tiff_image_parse function
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Reopened, Security
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Hardware: All   
OS: Linux   
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Last Closed: 2017-08-31 05:54:02 UTC Type: ---
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Bug Blocks: 1486739    

Description Adam Mariš 2017-08-30 12:27:16 UTC 
An integer overflow vulnerability was foud in tiff_image_parse function leading to undefined behaviour.

Upstream patch:

https://git.gnome.org/browse/gdk-pixbuf/commit/?id=31a6cff

Upstream bugs:

https://bugzilla.gnome.org/show_bug.cgi?id=770986
https://bugzilla.gnome.org/show_bug.cgi?id=780269
Comment 1 Huzaifa S. Sidhpurwala 2017-08-31 05:54:02 UTC 
Analysis:

This is an integer overflow leading to a heap-buffer overflow, which can lead to application crash or even arbitrary code execution in some certain cases. 

However as per https://bugzilla.gnome.org/show_bug.cgi?id=780269#c8 it seems that gcc is not really impacted (At least versions of gcc shipped in Red Hat Enterprise Linux which is used to compile all applications shipped in Red Hat Enterprise Linux is not impacted). So chances that this security flaw affects Red Hat versions of gdk-pixbuf2 are remote.

However there is an integer overflow flaw, so marking this as moderate is fine.