CVE-2016-10160: PHP off-by-one error in phar_parse_pharfile

CVE-2016-10160 · Severity: critical · CVSS 9.8 · Published 2017-01-24

PHP is a widely used programming language for web development. A flaw in how it handles PHAR archive files allows an attacker to send a specially crafted file that can crash the server or potentially allow the attacker to run unauthorized code. This could lead to a total compromise of the web server and any data it manages.

Technologies: Debian Linux, PHP Group PHP. Vendors: Debian, NetApp, PHP Group.

Quick answers

Is CVE-2016-10160 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2016-10160 being exploited in the wild.
How severe is CVE-2016-10160?
Critical severity, with a CVSS score of 9.8, published 24 January 2017.
Which products and versions are affected?
PHP Group PHP before 5.6.30, 7.0.x before 7.0.15.
Is there a fix for CVE-2016-10160?
A patch was published on 2017-01-19: PHP 5.6.30 release date Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2016-10160 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2016-10160?
Check whether you run Debian Linux, NetApp Clustered Data Ontap or PHP Group PHP at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An off-by-one error exists in the 'phar_parse_pharfile' function within 'ext/phar/phar.c' in PHP. The vulnerability is triggered when processing a crafted PHAR archive that contains an alias mismatch. This memory corruption flaw can be exploited by a remote, unauthenticated attacker to cause a denial of service (crash) or potentially achieve remote code execution (RCE). The issue was addressed in PHP versions 5.6.30 and 7.0.15.

Affected products

  • PHP PHP before 5.6.30, 7.0.x before 7.0.15

Timeline

  • 2017-01-24: advisory: NVD publication date
  • 2017-01-19: patched: PHP 5.6.30 release date

References

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