VulnerabilityModified
CVE-2021-40647
In version before GLIBC version 2.29 and aligned correctly, it allows arbitrary write anywhere in the programs memory.
MEDIUM 5.5EPSS 0.33%
Does this matter?
Lower severity and a low EPSS score (0.33%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.33% probability · 26th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- man2html project/man2html
- Source
- cve@mitre.org
References
- https://gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933Exploit, Third Party Advisory
- https://gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.