CVE-2023-0568

Advisory lineage Upstream: 0 Downstream: 17
Modified
Published: 16 Feb 2023, 06:34
Last modified:18 Mar 2025, 14:57

Vulnerability Summary

Overall Risk (default)
medium
42/100
CVSS Score
8.1 HIGH
v3.1 (nvd)
EPSS Score
0.44% LOW
0% probability +0.30%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

16 Feb 2023, 06:34
Published
Vulnerability first disclosed
18 Mar 2025, 14:57
Last Modified
Vulnerability information updated

Description

In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, core path resolution function allocate buffer one byte too small. When resolving paths with lengths close to system MAXPATHLEN setting, this may lead to the byte after the allocated buffer being overwritten with NUL value, which might lead to unauthorized data access or modification.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  • v3.1•HIGH•Score: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.44%• Percentile: 63%

Techniques & Countermeasures

  • CWE-131•Incorrect Calculation of Buffer Size

    The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.

  • CWE-770•Allocation of Resources Without Limits or Throttling

    The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected Systems

  • Unknown•PHP

    ≥ 8.0.x, < 8.0.28 | ≥ 8.1.x, < 8.1.16 | ≥ 8.2.x, < 8.2.3

  • Unknown•PHP

    ≥ 8.0.0, < 8.0.28 | ≥ 8.1.0, < 8.1.16 | ≥ 8.2.0, < 8.2.3

References (2)