Security Advisory Moderate: rhevm-spice-client security and bug fix update

Advisory: RHSA-2015:0197-1
Type: Security Advisory
Severity: Moderate
Issued on: 2014-07-25
Last updated on: 2015-02-11
Affected Products: Red Hat Enterprise Virtualization 3.5
CVEs ( CVE-2014-3509


Updated rhevm-spice-client packages that fix two security issues and
several bugs are now available for Red Hat Enterprise Virtualization
Manager 3.

Red Hat Product Security has rated this update as having Moderate security
impact. Common Vulnerability Scoring System (CVSS) base scores, which give
detailed severity ratings, are available for each vulnerability from the
CVE links in the References section.

Red Hat Enterprise Virtualization Manager provides access to virtual
machines using SPICE. These SPICE client packages provide the SPICE client
and usbclerk service for both Windows 32-bit operating systems and Windows
64-bit operating systems.

A race condition was found in the way OpenSSL handled ServerHello messages
with an included Supported EC Point Format extension. A malicious server
could possibly use this flaw to cause a multi-threaded TLS/SSL client using
OpenSSL to write into freed memory, causing the client to crash or execute
arbitrary code. (CVE-2014-3509)

A flaw was found in the way OpenSSL handled fragmented handshake packets.
A man-in-the-middle attacker could use this flaw to force a TLS/SSL server
using OpenSSL to use TLS 1.0, even if both the client and the server
supported newer protocol versions. (CVE-2014-3511)

This update also fixes the following bugs:

* Previously, various clipboard managers, operating on the client or on the
guest, would occasionally lose synchronization, which resulted in clipboard
data loss and the SPICE console freezing. Now, spice-gtk have been patched,
such that clipboard synchronization does not freeze the SPICE console
anymore. (BZ#1083489)

* Prior to this update, when a SPICE console was launched from the Red Hat
Enterprise Virtualization User Portal with the 'Native Client' invocation
method and 'Open in Full Screen' selected, the displays of the guest
virtual machine were not always configured to match the client displays.
After this update, the SPICE console will show a full-screen guest display
for each client monitor. (BZ#1076243)

* A difference in behavior between Linux and Windows clients caused an
extra nul character to be sent when pasting text in a guest machine from a
Windows client. This invisible character was visible in some Java
applications. With this update, the extra nul character is removed from
text strings and no more extraneous character would appear. (BZ#1090122)

* Previously, If the clipboard is of type image/bmp, and the data is of 0
size, GTK+ will crash. With this update, the data size is checked first,
and GTK+ no longer crashes when clipboard is of type image/bmp, and the
data is of 0 size. (BZ#1090433)

* Modifier-only key combinations cannot be registered by users as hotkeys
so if a user tries to set a modifier-only key sequence (for example,
'ctrl+alt') as the hotkey for releasing the cursor, it will fail, and the
user will be able to release the cursor from the window. With this update,
when a modifier-only hotkey is attempted to be registered, it will fall
back to the default cursor-release sequence (which happens to be
'ctrl+alt'). (BZ#985319)

* Display configuration sometimes used outdated information about the
position of the remote-viewer windows in order to align and configure the
guest displays. Occasionally, this caused the guest displays to became
unexpectedly swapped when a window is resized. With this update,
remote-viewer will always use the current window locations to align
displays, rather than using a possibly outdated cached location
information. (BZ#1018182)

All rhevm-spice-client users are advised to upgrade to these updated
packages, which contain backported patches to correct these issues.


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 3.5

File outdated by:  RHSA-2015:0698
    MD5: c7e30860a2a6294cfcd9c8ffb2a6ae13
SHA-256: a171a4abc493ec3d1ae0dd6b136df72d1be9f79a947afdee57a665d6ad9a24aa
File outdated by:  RHSA-2015:0698
    MD5: a60b89764459e7500c37b1e2a781efe6
SHA-256: 2eb2e4e4f54e29a97164ce77cda7eeec47e2ce90c0587cbd327d4a165e779d0b
File outdated by:  RHSA-2015:0698
    MD5: fa4585db060618db4fe45c60e64be56a
SHA-256: e12adaf29b5fdd5c012bec9662f941126b4cb9d59d3e5e3cdb4ef16e3a016fb3
File outdated by:  RHSA-2015:0698
    MD5: b9c5e7cc4f272c29be5a1b5347f5b498
SHA-256: 30d075cfc0b692236853fc28e9b57dbcf6963e7e821263991f4fbb43672876b1
File outdated by:  RHSA-2015:0698
    MD5: 4bf95149233cb1eaf3d535894ad59360
SHA-256: 958a78effacced3dca25e74faf58e90a19620401cbdf6c71dce62027f40b391a
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

1018145 - --full-screen=auto-conf sometimes (but frequently) doesn't work correctly
1018182 - primary monitor is switched if some screen gets bigger then current primary screen
1076243 - [BUG] RHEV SPICE console not opening in full screen or detecting resolution by default
1083489 - [SPICE][BUG] Spice session freezes randomly
1090122 - Pasting into java apps inserts unprintable character
1090433 - [GTK][BUG] win32: add more clipboard data checks to avoid crash
1103366 - Rebase virt-viewer to 0.6.0
1105650 - Fix windows productversion to fit -z releases
1115445 - in About dialog, hyphen version-build dividing hyphen is missing
1127498 - CVE-2014-3509 openssl: race condition in ssl_parse_serverhello_tlsext
1127504 - CVE-2014-3511 openssl: TLS protocol downgrade attack


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