Integer Overflow or Wraparound Affecting strongimcv package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
5.3% (93rd percentile)

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  • Snyk IDSNYK-CENTOS7-STRONGIMCV-2029214
  • published20 Oct 2021
  • disclosed18 Oct 2021

Introduced: 18 Oct 2021

CVE-2021-41991  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

There is no fixed version for Centos:7 strongimcv.

NVD Description

Note: Versions mentioned in the description apply only to the upstream strongimcv package and not the strongimcv package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1