CVE-2016-5770: Integer Overflow
First published: Sun Aug 07 2016(Updated: )
Integer overflow in the SplFileObject::fread function in spl_directory.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a large integer argument, a related issue to CVE-2016-5096.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PHP | <5.5.37 | |
| PHP | >=5.6.0<5.6.23 | |
| PHP | >=7.0.0<7.0.8 | |
| SUSE Linux | =42.1 | |
| SUSE Linux | =13.2 | |
| Debian | =8.0 |
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Reference Links
- http://github.com/php/php-src/commit/7245bff300d3fa8bacbef7897ff080a6f1c23eba?w=1
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html
- http://php.net/ChangeLog-5.php
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.debian.org/security/2016/dsa-3618
- http://www.openwall.com/lists/oss-security/2016/06/23/4
- http://www.securityfocus.com/bid/91403
- https://bugs.php.net/bug.php?id=72262
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
- https://support.apple.com/HT207170
Frequently Asked Questions
What is the severity of CVE-2016-5770?
CVE-2016-5770 has a medium severity level, posing a risk of denial of service and potentially allowing unspecified impacts.
How do I fix CVE-2016-5770?
To fix CVE-2016-5770, upgrade your PHP installation to version 5.5.37 or later or 5.6.23 or later.
Which versions of PHP are affected by CVE-2016-5770?
CVE-2016-5770 affects PHP versions prior to 5.5.37, 5.6.0 to 5.6.22, and 7.0.0 to 7.0.8.
What causes the vulnerability in CVE-2016-5770?
The vulnerability in CVE-2016-5770 is caused by an integer overflow in the SplFileObject::fread function.
Can CVE-2016-5770 be exploited remotely?
Yes, CVE-2016-5770 can be exploited remotely by attackers using a large integer argument to trigger denial of service.
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