Red Hat: 2011:1694-03: libcap: Low Advisory
Summary
The libcap packages provide a library and tools for getting and setting
POSIX capabilities.
It was found that capsh did not change into the new root when using the
"--chroot" option. An application started via the "capsh --chroot" command
could use this flaw to escape the chroot restrictions. (CVE-2011-4099)
This update also fixes the following bug:
* Previously, the libcap packages did not contain the capsh(1) manual page.
With this update, the capsh(1) manual page is included. (BZ#730957)
All libcap users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.
Summary
Solution
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
References
https://www.redhat.com/security/data/cve/CVE-2011-4099.html https://access.redhat.com/security/updates/classification/#low
Package List
Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386:
libcap-2.16-5.5.el6.i686.rpm
libcap-debuginfo-2.16-5.5.el6.i686.rpm
x86_64:
libcap-2.16-5.5.el6.i686.rpm
libcap-2.16-5.5.el6.x86_64.rpm
libcap-debuginfo-2.16-5.5.el6.i686.rpm
libcap-debuginfo-2.16-5.5.el6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386:
libcap-debuginfo-2.16-5.5.el6.i686.rpm
libcap-devel-2.16-5.5.el6.i686.rpm
x86_64:
libcap-debuginfo-2.16-5.5.el6.i686.rpm
libcap-debuginfo-2.16-5.5.el6.x86_64.rpm
libcap-devel-2.16-5.5.el6.i686.rpm
libcap-devel-2.16-5.5.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64:
libcap-2.16-5.5.el6.i686.rpm
libcap-2.16-5.5.el6.x86_64.rpm
libcap-debuginfo-2.16-5.5.el6.i686.rpm
libcap-debuginfo-2.16-5.5.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64:
libcap-debuginfo-2.16-5.5.el6.i686.rpm
libcap-debuginfo-2.16-5.5.el6.x86_64.rpm
libcap-devel-2.16-5.5.el6.i686.rpm
libcap-devel-2.16-5.5.el6.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386:
libcap-2.16-5.5.el6.i686.rpm
libcap-debuginfo-2.16-5.5.el6.i686.rpm
libcap-devel-2.16-5.5.el6.i686.rpm
ppc64:
libcap-2.16-5.5.el6.ppc.rpm
libcap-2.16-5.5.el6.ppc64.rpm
libcap-debuginfo-2.16-5.5.el6.ppc.rpm
libcap-debuginfo-2.16-5.5.el6.ppc64.rpm
libcap-devel-2.16-5.5.el6.ppc.rpm
libcap-devel-2.16-5.5.el6.ppc64.rpm
s390x:
libcap-2.16-5.5.el6.s390.rpm
libcap-2.16-5.5.el6.s390x.rpm
libcap-debuginfo-2.16-5.5.el6.s390.rpm
libcap-debuginfo-2.16-5.5.el6.s390x.rpm
libcap-devel-2.16-5.5.el6.s390.rpm
libcap-devel-2.16-5.5.el6.s390x.rpm
x86_64:
libcap-2.16-5.5.el6.i686.rpm
libcap-2.16-5.5.el6.x86_64.rpm
libcap-debuginfo-2.16-5.5.el6.i686.rpm
libcap-debuginfo-2.16-5.5.el6.x86_64.rpm
libcap-devel-2.16-5.5.el6.i686.rpm
libcap-devel-2.16-5.5.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
i386:
libcap-2.16-5.5.el6.i686.rpm
libcap-debuginfo-2.16-5.5.el6.i686.rpm
libcap-devel-2.16-5.5.el6.i686.rpm
x86_64:
libcap-2.16-5.5.el6.i686.rpm
libcap-2.16-5.5.el6.x86_64.rpm
libcap-debuginfo-2.16-5.5.el6.i686.rpm
libcap-debuginfo-2.16-5.5.el6.x86_64.rpm
libcap-devel-2.16-5.5.el6.i686.rpm
libcap-devel-2.16-5.5.el6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
Topic
Updated libcap packages that fix one security issue and one bug are nowavailable for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having lowsecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Bugs Fixed
722694 - CVE-2011-4099 capsh: does not chdir after chroot
730957 - Add missing capsh man page in libcap