CVE-2020-7065

Advisory lineage Upstream: 0 Downstream: 8
Modified
Published: 01 Apr 2020, 03:35
Last modified:17 Sept 2024, 04:25

Vulnerability Summary

Overall Risk (default)
medium
46/100
CVSS Score
8.8 HIGH
v3.1 (nvd)
EPSS Score
4.99% LOW
5% probability -0.03%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

01 Apr 2020, 03:35
Published
Vulnerability first disclosed
17 Sept 2024, 04:25
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.8AV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 4.99%• Percentile: 90%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

  • CWE-121•Stack-based Buffer Overflow

    A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04 | 16.04 | 18.04 | 19.10 | 20.04

  • debian•debian_linux

    10.0

  • Unknown•PHP

    ≥ 7.3.x, < 7.3.16 | ≥ 7.4.x, < 7.4.4

  • Unknown•PHP

    ≥ 7.3.0, < 7.3.16 | ≥ 7.4.0, < 7.4.4

  • tenable•tenable.sc

    < 5.19.0

References (8)