Use After Free in PHP
CVE-2020-7068
In PHP versions 7.2.x below 7.2.33, 7.3.x below 7.3.21 and 7.4.x below 7.4.9, while processing PHAR files using phar extension, phar_parse_zipfile could be tricked into accessing freed memory, which could lead to a crash or information disclosure.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.017 (75.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- PHP
- PHP Group — versions 7.3.x, 7.4.x, 7.2.x
- Tenable Tenable.sc
- Debian Linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.php.net/bug.php (Exploit, Patch, Mailing List, Vendor Advisory)
- security.gentoo.org/glsa/202009-10 (vendor-advisory, Third Party Advisory)
- security.netapp.com/advisory/ntap-20200918-0005/ (Third Party Advisory)
- www.debian.org/security/2021/dsa-4856 (vendor-advisory, Third Party Advisory)
- www.tenable.com/security/tns-2021-14 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7068?
- CVE-2020-7068 is a medium-severity vulnerability in PHP, classified under Use After Free. CVSS score: 4.8/10. Published 2020-09-09.
- How severe is CVE-2020-7068?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2020-7068 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.