6.1

CVE-2021-3623: fedoraproject fedora Out-of-bounds Write

Modified
AliasesSUSE-SU-2022:4457-1UBUNTU-CVE-2021-3623DEBIAN-CVE-2021-3623
Published 02-03-2022Last modified 03-08-2024

Vulnerability summary

CVE-2021-3623 is a medium (CVSS 6.1) Out-of-bounds Write vulnerability in fedoraproject fedora. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.8% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (NVD)
EPSS score
0.32%
0%100%
Low · 0.00 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 1
MGASA-2021-0590

Timeline

  1. 02-03-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in libtpms. The flaw can be triggered by specially-crafted TPM 2 command packets containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is marshalled/written or unmarshalled/read. The highest threat from this vulnerability is to system availability.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

24%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.32% on 22-09-2026

22-09-202622-10-2026

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

Suse5 products
  • libtpms&distro=SUSE Linux Enterprise Micro 5.1< 0.8.2-150300.3.6.1
  • libtpms&distro=SUSE Linux Enterprise Micro 5.2< 0.8.2-150300.3.6.1
  • libtpms&distro=SUSE Linux Enterprise Micro 5.3< 0.8.2-150300.3.6.1
  • libtpms&distro=SUSE Linux Enterprise Module for Server Applications 15 SP3< 0.8.2-150300.3.6.1
  • libtpms&distro=SUSE Linux Enterprise Module for Server Applications 15 SP4< 0.8.2-150300.3.6.1
Opensuse4 products
  • libtpms&distro=openSUSE Leap 15.3< 0.8.2-150300.3.6.1
  • libtpms&distro=openSUSE Leap 15.4< 0.8.2-150300.3.6.1
  • libtpms&distro=openSUSE Leap Micro 5.2< 0.8.2-150300.3.6.1
  • libtpms&distro=openSUSE Leap Micro 5.3< 0.8.2-150300.3.6.1
Debian1 product
  • libtpms< 0.9.1-1
Fedoraproject1 product
Libtpms_project1 product
  • libtpms< 0.6.5 | ≥ 0.7.0, < 0.7.8 | ≥ 0.8.0, < 0.8.4
Redhat1 product
Ubuntu1 product
  • libtpms< 0.9.3-0ubuntu1

7 vendors · 14 products

References

13 links
Show all 13 references