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Ubuntu: (Multiple Advisories) (CVE-2021-41991): strongSwan vulnerability

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Ubuntu: (Multiple Advisories) (CVE-2021-41991): strongSwan vulnerability

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
10/18/2021
Created
10/28/2021
Added
10/20/2021
Modified
03/24/2022

Description

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.

Solution(s)

  • ubuntu-upgrade-libstrongswan
  • ubuntu-upgrade-strongswan

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