9.1

CVE-2021-45079: canonical ubuntu_linux NULL Pointer Dereference

CVSS: 9.1v3.1CriticalModified
AliasesALPINE-CVE-2021-45079SUSE-SU-2022:0202-1SUSE-SU-2022:0211-1
Published 31-01-2022Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-45079 is a critical (CVSS 9.1) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 2.78% chance of exploitation in the next 30 days, higher than 86.1% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
2.78%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
SUSE-SU-2022:14887-1

Timeline

  1. 31-01-2022
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

2.78%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

+0.01 pp

From 2.77% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.78%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse36 products
  • strongswan&distro=HPE Helion OpenStack 8< 5.1.3-26.20.1
  • strongswan&distro=SUSE Enterprise Storage 6< 5.8.2-4.17.1
  • strongswan&distro=SUSE Enterprise Storage 7< 5.8.2-11.24.1
  • strongswan&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS< 5.8.2-4.17.1
  • strongswan&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS< 5.8.2-4.17.1
Debian2 products
  • strongswan< 5.9.5-1 | < 5.7.2-1+deb10u2 | < 5.9.1-1+deb11u2 | < 5.5.1-4+deb9u6
  • debian_linuxEOL9.0 | 10.0 | 11.0
Fedoraproject2 products
Opensuse2 products
  • strongswan&distro=openSUSE Leap 15.3< 5.8.2-11.24.1
  • strongswan&distro=openSUSE Tumbleweed< 5.9.5-1.1
Alpine1 product
  • strongswan≥ 4.1.2, < 5.9.1-r2 | ≥ 4.1.2, < 5.9.1-r3 | ≥ 4.1.2, < 5.9.1-r4
Canonical1 product
Strongswan1 product
Ubuntu1 product
  • strongswan< 5.3.5-1ubuntu3.fips.3.8.3 | All versions (No fix recorded) | < 5.6.2-1ubuntu2.fips.2.8.1 | < 5.8.2-1ubuntu3.fips.3.4.1 | < 5.9.4-1ubuntu4 | < 5.6.2-1ubuntu2.8 | < 5.8.2-1ubuntu3.4 | < 5.1.2-0ubuntu2.11+esm2 | < 5.3.5-1ubuntu3.8+esm2

8 vendors · 46 products

References

16 links
Show all 16 references