CVE-2017-11185

Publication date 18 August 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The gmp plugin in strongSwan before 5.6.0 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted RSA signature.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
strongswan	17.04 zesty	Fixed 5.5.1-1ubuntu3.2
	16.04 LTS xenial	Fixed 5.3.5-1ubuntu3.4
	14.04 LTS trusty	Fixed 5.1.2-0ubuntu2.7

Notes

sdeziel

Remote code execution is not possible.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
strongswan	Upstream: https://wiki.strongswan.org/projects/strongswan/repository/revisions/ef5c37fcdf47273feea320091598135688df4ef7 Upstream: https://download.strongswan.org/security/CVE-2017-11185/strongswan-4.4.0-5.5.3_gmp_mpz_export.patch

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.5 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	None
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	7.5 · High
Exploitability score	-
Impact score	-

CVE-2017-11185

Cvss 3 Severity Score

Description

Status

Notes

sdeziel

Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references

Access our resources on patching vulnerabilities