Bug 1351069 (CVE-2016-5767)
| Summary: | CVE-2016-5767 gd: Integer Overflow in gdImagePaletteToTrueColor() resulting in heap overflow | ||
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| Product: | [Other] Security Response | Reporter: | Andrej Nemec <anemec> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | Huzaifa S. Sidhpurwala <huzaifas> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | abhgupta, databases-maint, dmcphers, fedora, fjanus, hhorak, jialiu, jokerman, jorton, lmeyer, mmccomas, panovotn, rcollet, tiwillia, webstack-team |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | php 5.5.37, php 5.6.23, gd 2.0.34 | Doc Type: | If docs needed, set a value |
| Doc Text: |
An integer overflow flaw, leading to a heap-based buffer overflow was found in the gdImagePaletteToTrueColor() function of PHP's gd extension. A remote attacker could use this flaw to crash a PHP application or execute arbitrary code with the privileges of the user running that PHP application using gd via a specially crafted image buffer.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-06-08 02:56:02 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: | 1351180, 1356812 | ||
| Bug Blocks: | 1323912, 1351183 | ||
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Description
Andrej Nemec
2016-06-29 07:19:53 UTC
Created php tracking bugs for this issue: Affects: fedora-all [bug 1351180] php-5.6.23-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report. php-5.6.23-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report. php-5.6.23-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report. Analysis: This is triggered when a very large image created by imagecreate() is passed to imagepalettetotruecolor(), which triggers an integer overflow followed by heap-buffer overflow. From a php point of view, this needs to be triggered by an attacker controlled imagecreate(), which is very unlikely situation. This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2016:2598 https://rhn.redhat.com/errata/RHSA-2016-2598.html This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 6 Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS Via RHSA-2016:2750 https://rhn.redhat.com/errata/RHSA-2016-2750.html gd upstream was actually fixed long before gd bundled with php via this commit: https://github.com/libgd/libgd/commit/cfee163a5e848fc3e3fb1d05a30d7557cdd36457 This commit was first included in gd version 2.0.34. See also: https://github.com/libgd/libgd/issues/243 |