Bug 473463 (CVE-2008-5317) - CVE-2008-5317 lcms: unsigned -> signed integer cast issue in cmsAllocGamma
Summary: CVE-2008-5317 lcms: unsigned -> signed integer cast issue in cmsAllocGamma
Alias: CVE-2008-5317
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 473469 473470 479384 833921
TreeView+ depends on / blocked
Reported: 2008-11-28 16:29 UTC by Tomas Hoger
Modified: 2019-09-29 12:27 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2010-03-29 08:38:59 UTC

Attachments (Terms of Use)
Patch used in SuSE security updates (562 bytes, patch)
2008-11-28 16:30 UTC, Tomas Hoger
no flags Details | Diff

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2009:0011 0 normal SHIPPED_LIVE Moderate: lcms security update 2009-01-07 13:38:58 UTC

Description Tomas Hoger 2008-11-28 16:29:20 UTC
There was a unsigned -> signed integer cast issue in cmsAllocGamma
in src/cmsgamma.c.  The argument to this function - nEntries - may be
read from the file and not validated before cmsAllocGamma is called.
As nEntries in cmsAllocGamma is signed integer, its value may possibly
be negative and can result in an insufficient memory allocation.

This issue was fixed upstream in 1.17.

Upstream CVS commit:


Comment 1 Tomas Hoger 2008-11-28 16:30:38 UTC
Created attachment 325025 [details]
Patch used in SuSE security updates

This was extracted from SuSE liblcms-1.15-32.src.rpm.  Original name of the
patch was lcms-gamma-overflow.patch.

Comment 2 Tomas Hoger 2008-11-28 16:31:07 UTC
Affected lcms versions are currently in Red Hat Enterprise Linux 5 and Fedora EPEL 4 (both based on upstream 1.15).

Comment 5 Tomas Hoger 2008-12-03 17:16:22 UTC
CVE id CVE-2008-5317 was assigned to this issue:

Integer signedness error in the cmsAllocGamma function in
src/cmsgamma.c in Little cms color engine (aka lcms) before 1.17
allows attackers to have an unknown impact via a file containing a
certain "number of entries" value, which is interpreted improperly,
leading to an allocation of insufficient memory.

Note You need to log in before you can comment on or make changes to this bug.