CVE-2021-40648

Public Exploit

Description

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-40648?
CVE-2021-40648 has been scored as a medium severity vulnerability.
How to fix CVE-2021-40648?
To fix CVE-2021-40648, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40648 being actively exploited in the wild?
It is possible that CVE-2021-40648 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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