CVE-2021-3622

Public Exploit

Description

A flaw was found in the hivex library. This flaw allows an attacker to input a specially crafted Windows Registry (hive) file, which would cause hivex to recursively call the _get_children() function, leading to a stack overflow. The highest threat from this vulnerability is to system availability.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.58%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: n/a hivex
Published at:
Updated at:

References

Link Tags
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/USD4OEV6L3RPHE32V2MJ4JPFBODINWSU/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S35TVTAPHORSUIFYNFBHKLQRPVFUPXBE/ vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1975489 issue tracking patch vendor advisory exploit
https://github.com/libguestfs/hivex/commit/771728218dac2fbf6997a7e53225e75a4c6b7255 third party advisory patch
https://listman.redhat.com/archives/libguestfs/2021-August/msg00002.html mailing list patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-3622?
CVE-2021-3622 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3622?
To fix CVE-2021-3622, 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-2021-3622 being actively exploited in the wild?
It is possible that CVE-2021-3622 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3622?
CVE-2021-3622 affects n/a hivex.
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