Buffer overflow in Php
CVE-2020-7065
In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution.
Vulnerability class: Buffer Overflow
EPSS: 0.049 (91.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Php
- Php Group — versions 7.3.x, 7.4.x
- Tenable Tenable.sc
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Debian Debian_linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@php.net (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@php.net (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@php.net (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@php.net (x_refsource_CONFIRM, Third Party Advisory)
- security@php.net (Patch, Third Party Advisory, x_refsource_MISC)
- security@php.net (Exploit, Patch, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- security@php.net (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
- security@php.net (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7065?
- CVE-2020-7065 is a high-severity vulnerability in Php, classified under Stack-based Buffer Overflow. CVSS score: 7.4/10. Published 2020-04-01.
- How severe is CVE-2020-7065?
- High severity. CVSS v3 base score is 7.4 out of 10.
- Is CVE-2020-7065 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.