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Debian Security Advisory DSA 4607-1 (openconnect - security update)

Information

Severity

Severity

High

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.5

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

2 years ago

Modified

Modified

2 years ago

Summary

The remote host is missing an update for the 'openconnect' package(s) announced via the DSA-4607-1 advisory.

Insight

Insight

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.

Affected Software

Affected Software

'openconnect' package(s) on Debian Linux.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.

Solution

Solution

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.

Common Vulnerabilities and Exposures (CVE)