Vulnerability CVE-2021-41990
Published: 2021-10-18

Description:
The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted certificate with an RSASSA-PSS signature. For example, this can be triggered by an unrelated self-signed CA certificate sent by an initiator. Remote code execution cannot occur.

Type:

CWE-190

 (Integer Overflow or Wraparound)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Strongswan -> Strongswan 
Debian -> Debian linux 

 References:
https://github.com/strongswan/strongswan/releases/tag/5.9.4
https://www.strongswan.org/blog/2021/10/18/strongswan-vulnerability-(cve-2021-41990).html
https://www.debian.org/security/2021/dsa-4989
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