CVE-2021-41991
Published: 18 October 2021
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.
Priority
Medium
CVSS 3 base score: 7.5
Status
| Package | Release | Status |
|---|---|---|
|
strongswan Launchpad, Ubuntu, Debian |
bionic |
Released
(5.6.2-1ubuntu2.7)
|
| focal |
Released
(5.8.2-1ubuntu3.3)
|
|
| hirsute |
Released
(5.9.1-1ubuntu1.2)
|
|
| impish |
Released
(5.9.1-1ubuntu3.1)
|
|
| jammy |
Released
(5.9.1-1ubuntu3.1)
|
|
| trusty |
Released
(5.1.2-0ubuntu2.11+esm1)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(5.3.5-1ubuntu3.8+esm1)
|
Notes
| Author | Note |
|---|---|
| mdeslaur | affects 4.2.10+ |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41991
- https://ubuntu.com/security/notices/USN-5111-1
- https://ubuntu.com/security/notices/USN-5111-2
- NVD
- Launchpad
- Debian