Medium severity5.5NVD Advisory· Published Sep 9, 2022· Updated Jun 17, 2026
CVE-2021-40647
CVE-2021-40647
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.
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Affected products
2- cpe:2.3:a:man2html_project:man2html:1.6g:*:*:*:*:*:*:*
- man2html/man2htmldescription
Patches
Vulnerability mechanics
References
1- gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933nvdExploitThird Party Advisory
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