5.8

CVE-2021-3504: debian debian_linux Out-of-bounds Read

Modified
AliasesMGASA-2021-0320SUSE-SU-2021:1760-1SUSE-SU-2021:1761-1
Published 11-05-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-3504 is a medium (CVSS 5.8) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 1.85% chance of exploitation in the next 30 days, higher than 79.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.4, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.8/10
010
Medium · v2.0 (NVD)
EPSS score
1.85%
0%100%
Low · -0.08 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
OPENSUSE-SU-2024:10845-1RHSA-2021:3061

Timeline

  1. 11-05-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

1.85%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

Decrease -0.08 pp

From 1.93% 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

0 found

No public exploits indexed.

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.

Redhat10 products
  • enterprise_linuxEOL6.0 | 7.0 | 8.0
  • hivex< 1.3.20
  • hivex< 0:1.3.10-6.11.el7_9
  • hivex-debuginfo< 0:1.3.10-6.11.el7_9
  • hivex-devel< 0:1.3.10-6.11.el7_9
Suse8 products
  • hivex&distro=SUSE Linux Enterprise Micro 5.0< 1.3.14-5.3.1
  • hivex&distro=SUSE Linux Enterprise Module for Basesystem 15 SP2< 1.3.14-5.3.1
  • hivex&distro=SUSE Linux Enterprise Module for Basesystem 15 SP3< 1.3.14-5.3.1
  • hivex&distro=SUSE Linux Enterprise Module for Development Tools 15 SP2< 1.3.14-5.3.1
  • hivex&distro=SUSE Linux Enterprise Module for Development Tools 15 SP3< 1.3.14-5.3.1
Debian2 products
  • hivex< 1.3.18-1+deb10u1 | < 1.3.13-2+deb9u1 | < 1.3.20-1
  • debian_linuxEOL9.0
Mageia2 products
  • hivex< 1.3.20-1.mga7
  • hivex< 1.3.20-1.mga8
Opensuse2 products
  • hivex&distro=openSUSE Leap 15.2< 1.3.14-lp152.4.3.1
  • hivex&distro=openSUSE Leap 15.3< 1.3.14-5.3.1
Alpine1 product
  • hivex< 1.3.19-r1 | < 1.3.19-r2
Fedoraproject1 product
Ubuntu1 product
  • hivex< 1.3.9-2ubuntu0.1~esm1 | < 1.3.13-1ubuntu0.1~esm1 | < 1.3.15-1ubuntu0.1 | < 1.3.18-2ubuntu0.1 | All versions (No fix recorded)

8 vendors · 27 products

References

26 links
Show all 26 references