VULNERABILITY INTELLIGENCE

CVE-2021-40647

CVSS score5.5 MEDIUM
EPSS probability0.33%
CISA KEVNot currently listed
Published2022-09-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Description

In man2html 1.6g, a specific string being read in from a file will overwrite the size parameter in the top chunk of the heap. This at least causes the program to segmentation abort if the heap size parameter isn't aligned correctly. In version before GLIBC version 2.29 and aligned correctly, it allows arbitrary write anywhere in the programs memory.

Weakness classification

  • nvd@nist.gov: CWE-787

Primary references