CVE-2021-3504

medium

Description

A flaw was found in the hivex library in versions before 1.3.20. It is caused due to a lack of bounds check within the hivex_open function. An attacker could input a specially crafted Windows Registry (hive) file which would cause hivex to read memory beyond its normal bounds or cause the program to crash. The highest threat from this vulnerability is to system availability.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1949687

https://lists.debian.org/debian-lts-announce/2021/05/msg00011.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/BQXTEACRWYAZVNEOIWIYUFGG4GOXSQ22/

https://lists.fedoraproject.org/archives/list/[email protected]/message/A5BNKNVYFL36P2GBEB5O36LHFRYU575H/

Details

Source: MITRE

Published: 2021-05-11

Updated: 2021-06-21

Type: CWE-125

Risk Information

CVSS v2

Base Score: 5.8

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:P

Impact Score: 4.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

Impact Score: 2.5

Exploitability Score: 2.8

Severity: MEDIUM