4.3

CVE-2021-3622: fedoraproject fedora Uncontrolled Resource Consumption

Modified
AliasesMGASA-2021-0528SUSE-SU-2021:3201-1SUSE-SU-2021:3201-2
Published 23-12-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-3622 is a medium (CVSS 4.3) Uncontrolled Resource Consumption vulnerability in fedoraproject fedora. EPSS estimates a 5.15% chance of exploitation in the next 30 days, higher than 92.4% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
5.15%
0%100%
Low · +0.36 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
OPENSUSE-SU-2024:10845-1RHSA-2022:1759

Timeline

  1. 23-12-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

5.15%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

Increase +0.36 pp

From 4.79% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugzilla.redhat.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat11 products
Suse9 products
  • hivex&distro=SUSE Linux Enterprise Micro 5.0< 1.3.14-5.6.1
  • hivex&distro=SUSE Linux Enterprise Micro 5.1< 1.3.14-5.6.1
  • hivex&distro=SUSE Linux Enterprise Module for Basesystem 15 SP2< 1.3.14-5.6.1
  • hivex&distro=SUSE Linux Enterprise Module for Basesystem 15 SP3< 1.3.14-5.6.1
  • hivex&distro=SUSE Linux Enterprise Module for Development Tools 15 SP2< 1.3.14-5.6.1
Opensuse2 products
  • hivex&distro=openSUSE Leap 15.2< 1.3.14-lp152.4.6.1
  • hivex&distro=openSUSE Leap 15.3< 1.3.14-5.6.1
Debian1 product
  • hivex< 1.3.21-1
Fedoraproject1 product
Mageia1 product
  • hivex< 1.3.20-1.1.mga8
Ubuntu1 product
  • hivexAll versions (No fix recorded)

7 vendors · 26 products

References

23 links
Show all 23 references