Debian Security Advisory

DLA-1945-1 openconnect -- LTS security update

Date Reported:
03 Oct 2019
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 940871.
In Mitre's CVE dictionary: CVE-2019-16239.
More information:

A vulnerability was discovered by Lukas Kupczyk of the Advanced Research Team at CrowdStrike Intelligence in OpenConnect, an open client for Cisco AnyConnect, Pulse, GlobalProtect VPN. A malicious HTTP server (after its identity certificate has been accepted) can provide bogus chunk lengths for chunked HTTP encoding and cause a heap overflow.

For Debian 8 Jessie, this problem has been fixed in version 6.00-2+deb8u1.

We recommend that you upgrade your openconnect packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: