Home/CVE/The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests wi
CVE

CVE-2021-41991

The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests wi

The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.

HIGH · CVSS 7.5 EPSS 0.02755
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 Oct 2021 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Advisories

12
suse-csafopenSUSE-SU-2024:11655-1
siemens-csafSSA-539476
suse-csafopenSUSE-SU-2021:1399-1
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