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Debian Security Advisory DSA-4607-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
January 20, 2020                      https://www.debian.org/security/faq
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Package        : openconnect
CVE ID         : CVE-2019-16239
Debian Bug     : 940871

Lukas Kupczyk reported a vulnerability in the handling of chunked HTTP
in openconnect, an open client for Cisco AnyConnect, Pulse and
GlobalProtect VPN. A malicious HTTP server (after having accepted its
identity certificate), can provide bogus chunk lengths for chunked HTTP
encoding and cause a heap-based buffer overflow.

For the oldstable distribution (stretch), this problem has been fixed
in version 7.08-1+deb9u1.

For the stable distribution (buster), this problem has been fixed in
version 8.02-1+deb10u1.

We recommend that you upgrade your openconnect packages.

For the detailed security status of openconnect please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/source-package/openconnect

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org

Debian: DSA-4607-1: openconnect security update

January 20, 2020
Lukas Kupczyk reported a vulnerability in the handling of chunked HTTP in openconnect, an open client for Cisco AnyConnect, Pulse and GlobalProtect VPN

Summary

For the oldstable distribution (stretch), this problem has been fixed
in version 7.08-1+deb9u1.

For the stable distribution (buster), this problem has been fixed in
version 8.02-1+deb10u1.

We recommend that you upgrade your openconnect packages.

For the detailed security status of openconnect please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/source-package/openconnect

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org

Severity
Lukas Kupczyk reported a vulnerability in the handling of chunked HTTP
in openconnect, an open client for Cisco AnyConnect, Pulse and
GlobalProtect VPN. A malicious HTTP server (after having accepted its
identity certificate), can provide bogus chunk lengths for chunked HTTP
encoding and cause a heap-based buffer overflow.

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