Debian DLA-1528-1 : strongswan security update

Medium Nessus Plugin ID 117889


The remote Debian host is missing a security update.


It was discovered that there was a denial of service vulnerability in strongswan, a virtual private network (VPN) client and server.

Verification of an RSA signature with a very short public key caused an integer underflow in a length check that resulted in a heap buffer overflow.

For Debian 8 'Jessie', this issue has been fixed in strongswan version 5.2.1-6+deb8u8.

We recommend that you upgrade your strongswan packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 117889

File Name: debian_DLA-1528.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2018/10/03

Modified: 2018/11/29

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:charon-cmd, p-cpe:/a:debian:debian_linux:libcharon-extra-plugins, p-cpe:/a:debian:debian_linux:libstrongswan, p-cpe:/a:debian:debian_linux:libstrongswan-extra-plugins, p-cpe:/a:debian:debian_linux:libstrongswan-standard-plugins, p-cpe:/a:debian:debian_linux:strongswan, p-cpe:/a:debian:debian_linux:strongswan-charon, p-cpe:/a:debian:debian_linux:strongswan-dbg, p-cpe:/a:debian:debian_linux:strongswan-ike, p-cpe:/a:debian:debian_linux:strongswan-ikev1, p-cpe:/a:debian:debian_linux:strongswan-ikev2, p-cpe:/a:debian:debian_linux:strongswan-libcharon, p-cpe:/a:debian:debian_linux:strongswan-nm, p-cpe:/a:debian:debian_linux:strongswan-starter, cpe:/o:debian:debian_linux:8.0

Patch Publication Date: 2018/10/02

Reference Information

CVE: CVE-2018-17540