Bug 1339949 (CVE-2016-5096)
| Summary: | CVE-2016-5096 php: Integer underflow causing arbitrary null write in fread/gzread | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Adam Mariš <amaris> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | abhgupta, dmcphers, fedora, hhorak, jialiu, jokerman, jorton, kseifried, lmeyer, mmccomas, rcollet, tiwillia, webstack-team |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | php 5.5.36, php 5.6.22 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-06-07 11:34:42 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: | 1339950 | ||
| Bug Blocks: | 1339953 | ||
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Description
Adam Mariš
2016-05-26 09:04:56 UTC
Created php tracking bugs for this issue: Affects: fedora-all [bug 1339950] php-5.6.22-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report. php-5.6.22-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report. php-5.6.22-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report. This problem occurs when fread or gzread are called with excessively large $length argument value (above 2GB / 2^31). Additionally, this flaw can only be triggered when PHP is running with no memory limit, or its memory limit exceeds 2GB. The default configuration of PHP packages in Red Hat products sets memory_limit to 128M, completely blocking this issue. This issue can be mitigated by ensuring memory_limit is set and its value does not exceed 2GB. 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 |