Double Free in PHP
CVE-2016-5772
Double free vulnerability in the php_wddx_process_data function in wddx.c in the WDDX extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via crafted XML data that is mishandled in a wddx_deserialize call.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.097 (95.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.097 · newest: 0.097 · change: 0.000
Affected products
- PHP
- Debian Linux — versions 8.0
- openSUSE Leap — versions 42.1
- openSUSE — versions 13.2
- SUSE Linux Enterprise Debuginfo — versions 11
- SUSE Linux Enterprise Server — versions 11
- SUSE Linux Enterprise Software Development Kit — versions 11
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/php/php-src/commit/a44c89e8af7c2410f4bfc5e097be2a5d0639a60c (Patch, Third Party Advisory)
- lists.apple.com/archives/security-announce/2016/Sep/msg00006.html (vendor-advisory, Mailing List, Third Party Advisory, Broken Link)
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-updates/2016-08/msg00003.html (vendor-advisory, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-2750.html (vendor-advisory, Third Party Advisory)
- php.net/ChangeLog-5.php (Patch, Release Notes, Vendor Advisory)
- bugs.php.net/bug.php (Exploit, Issue Tracking, Vendor Advisory)
- www.openwall.com/lists/oss-security/2016/06/23/4 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.debian.org/security/2016/dsa-3618 (vendor-advisory, Third Party Advisory)
- php.net/ChangeLog-7.php (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2016-5772?
- CVE-2016-5772 is a critical-severity vulnerability in PHP, classified under Double Free. CVSS score: 9.8/10. Published 2016-08-07.
- How severe is CVE-2016-5772?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-5772 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.