CVE-2021-40648

In man2html 1.6g, a filename can be created to overwrite the previous size parameter of the next chunk and the fd, bk, fd_nextsize, bk_nextsize of the current chunk. The next chunk is then freed later on, causing a freeing of an arbitrary amount of memory.

CVSS v3.1

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.32% chance of exploitation in the next 30 days, 24th percentile

Published

2022-09-09

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933

References

• CVE Record
• NVD entry

Related

• CVE-2021-40647
• CVE-2021-40649
• CVE-2021-40645
• CVE-2021-40650
• CVE-2021-40644
• CVE-2021-40651