Debian Security Advisory

DSA-1011-1 kernel-patch-vserver -- missing attribute support

Date Reported:
21 Mar 2005
Affected Packages:
kernel-patch-vserver, util-vserver
Security database references:
In the Debian bugtracking system: Bug 329087, Bug 329090.
In Mitre's CVE dictionary: CVE-2005-4347, CVE-2005-4418.
More information:

Several vulnerabilities have been discovered in the Debian vserver support for Linux. The Common Vulnerabilities and Exposures project identifies the following problems:

  • CVE-2005-4347

    Bjørn Steinbrink discovered that the chroot barrier is not set correctly with util-vserver which may result in unauthorised escapes from a vserver to the host system.

    This vulnerability is limited to the 2.4 kernel patch included in kernel-patch-vserver. The correction to this problem requires updating the util-vserver package as well and installing a new kernel built from the updated kernel-patch-vserver package.

  • CVE-2005-4418

    The default policy of util-vserver is set to trust all unknown capabilities instead of considering them as insecure.

The old stable distribution (woody) does not contain a kernel-patch-vserver package.

For the stable distribution (sarge) this problem has been fixed in version of kernel-patch-vserver and in version 0.30.204-5sarge3 of util-vserver.

For the unstable distribution (sid) this problem has been fixed in version 2.3 of kernel-patch-vserver and in version 0.30.208-1 of util-vserver.

We recommend that you upgrade your util-vserver and kernel-patch-vserver packages and build a new kernel immediately.

Fixed in:

Debian GNU/Linux 3.1 (sarge)

Architecture-independent component:
Intel IA-32:
Intel IA-64:
Big endian MIPS:
Little endian MIPS:
IBM S/390:
Sun Sparc:

MD5 checksums of the listed files are available in the original advisory.