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.
References
Link Resource
https://gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933 Exploit Third Party Advisory
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2022-09-09T17:57:28

Updated: 2022-09-10T02:58:33

Reserved: 2021-09-07T00:00:00


Link: CVE-2021-40647

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2022-09-09T18:15:09.197

Modified: 2023-08-08T14:22:24.967


Link: CVE-2021-40647

JSON object: View

cve-icon Redhat Information

No data.

CWE