Main Vulnerability Database Vulnerabilities #VU33044

NULL pointer dereference in strongSwan - CVE-2017-11185

Published: August 18, 2017 / Updated: August 3, 2020

Vulnerability identifier: #VU33044

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-11185

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a crafted RSA signature.

Affected software

strongSwan
Arch Linux
strongswan (Alpine package)

How to mitigate CVE-2017-11185

Update to version 5.6.0.

strongSwan - update to 5.6.0
strongswan (Alpine package) - update to 5.3.5-r4

External References

http://www.debian.org/security/2017/dsa-3962
http://www.securityfocus.com/bid/100492
https://www.strongswan.org/blog/2017/08/14/strongswan-vulnerability-(cve-2017-11185).html

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