Security Advisory Moderate: vdsm22 security and bug fix update

Advisory: RHSA-2010:0628-1
Type: Security Advisory
Severity: Moderate
Issued on: 2010-08-19
Last updated on: 2010-08-19
Affected Products: Red Hat Enterprise Virtualization
CVEs ( CVE-2010-2811


Updated vdsm22 packages that fix one security issue and multiple bugs are
now available for Red Hat Enterprise Linux 5.5.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

VDSM is a management module that serves as a Red Hat Enterprise
Virtualization Manager agent on Red Hat Enterprise Virtualization
Hypervisor or Red Hat Enterprise Linux hosts.

Note: This update has been tested and is supported on Red Hat Enterprise
Linux 5.5 (with all appropriate post-GA 5.5-specific updates).

A flaw was found in the way VDSM accepted SSL connections. An attacker
could trigger this flaw by creating a crafted SSL connection to VDSM,
preventing VDSM from accepting SSL connections from other users.

These updated vdsm22 packages also fix the following bugs:

* suspend-to-file hibernation failed for huge guests due to the migration
and hibernation constant values being too short for huge guests. This
update makes the timeouts proportional to guest RAM size, thus allowing
suspension of huge guests in all cases except where storage is unbearably
slow. (BZ#601275)

* under certain circumstances, restarting a VDSM that was being used as a
Storage Pool Manager killed all system processes on the host. With this
update, stopping VDSM is ensured to kill only the processes that it
started, and the VDSM SIGTERM handler is not run concurrently. With these
changes, all processes on the host are no longer killed when VDSM is
restarted. (BZ#614849)

* when VDSM was requested to "start in paused mode", it incorrectly
reported virtual guest state as "WaitForLaunch" instead of "Paused", which
led to the virtual guest being inaccessible from Red Hat Enterprise
Virtualization Manager. With this update, VDSM reports such virtual guests
as "Paused", and users are able to connect to the virtual guest display.

Red Hat Enterprise Virtualization Manager 2.2 users with Red Hat Enterprise
Linux hosts should install these updated packages, which resolve these
issues. Alternatively, Red Hat Enterprise Virtualization Manager can
install the new package automatically.


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

Updated packages

Red Hat Enterprise Virtualization

File outdated by:  RHBA-2012:0169
    MD5: 441db0b510b255046fead98f60b5a59b
SHA-256: 10f12ee09dd8ac8ab2a19b9f46861136eede4a7e2e0f1f7e4628d6c60ffbc766
File outdated by:  RHBA-2012:0169
    MD5: d60a5f03b7556af6c2de39dbcdf39ee9
SHA-256: b59704883e72e98a4269a8f766e18ddba88db3829346a11a184f01039a9f818f
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

622928 - CVE-2010-2811 vdsm: SSL accept() blocks on a non-blocking Connection


These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:

The Red Hat security contact is More contact details at