Buffer Overflow Vulnerability in strongSwan VPN Software
CVE-2023-41913

9.8CRITICAL

Key Information:

Vendor

Strongswan

Status
Strongswan
Vendor
CVE Published:
7 December 2023

What is CVE-2023-41913?

A buffer overflow vulnerability exists in the strongSwan VPN software, specifically impacting versions prior to 5.9.12. This flaw allows the possibility of unauthenticated remote code execution through a manipulated Diffie-Hellman (DH) public value that exceeds the buffer limit in charon-tkm's DH proxy. Exploitation occurs via a specially crafted IKE_SA_INIT message, potentially enabling malicious actors to execute arbitrary code in the context of the application.

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References

https://github.com/strongswan/strongswan/releases
https://www.strongswan.org/blog/2023/11/20/strongswan-vul...
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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