what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

Red Hat Security Advisory 2017-2000-01

Red Hat Security Advisory 2017-2000-01
Posted Aug 2, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2000-01 - Virtual Network Computing is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients which allows users to connect to other desktops running a VNC server. FLTK is a cross-platform C++ GUI toolkit. It provides modern GUI functionality without the bloat, and supports 3D graphics via OpenGL and its built-in GLUT emulation. The following packages have been upgraded to a later upstream version: tigervnc, fltk.

tags | advisory, remote
systems | linux, redhat
advisories | CVE-2016-10207, CVE-2017-5581, CVE-2017-7392, CVE-2017-7393, CVE-2017-7394, CVE-2017-7395, CVE-2017-7396
SHA-256 | 6d67f6e14d6c56a2db76fe794e4c7332dfcb2b7d03070b8668c376d0c4d9e904

Red Hat Security Advisory 2017-2000-01

Change Mirror Download

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: tigervnc and fltk security, bug fix, and enhancement update
Advisory ID: RHSA-2017:2000-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:2000
Issue date: 2017-08-01
CVE Names: CVE-2016-10207 CVE-2017-5581 CVE-2017-7392
CVE-2017-7393 CVE-2017-7394 CVE-2017-7395
CVE-2017-7396
=====================================================================

1. Summary:

An update for tigervnc and fltk is now available for Red Hat Enterprise
Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 7) - aarch64, noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

3. Description:

Virtual Network Computing (VNC) is a remote display system which allows
users to view a computing desktop environment not only on the machine where
it is running, but from anywhere on the Internet and from a wide variety of
machine architectures. TigerVNC is a suite of VNC servers and clients which
allows users to connect to other desktops running a VNC server.

FLTK (pronounced "fulltick") is a cross-platform C++ GUI toolkit. It
provides modern GUI functionality without the bloat, and supports 3D
graphics via OpenGL and its built-in GLUT emulation.

The following packages have been upgraded to a later upstream version:
tigervnc (1.8.0), fltk (1.3.4). (BZ#1388620, BZ#1413598)

Security Fix(es):

* A denial of service flaw was found in the TigerVNC's Xvnc server. A
remote unauthenticated attacker could use this flaw to make Xvnc crash by
terminating the TLS handshake process early. (CVE-2016-10207)

* A double free flaw was found in the way TigerVNC handled ClientFence
messages. A remote, authenticated attacker could use this flaw to make Xvnc
crash by sending specially crafted ClientFence messages, resulting in
denial of service. (CVE-2017-7393)

* A missing input sanitization flaw was found in the way TigerVNC handled
credentials. A remote unauthenticated attacker could use this flaw to make
Xvnc crash by sending specially crafted usernames, resulting in denial of
service. (CVE-2017-7394)

* An integer overflow flaw was found in the way TigerVNC handled
ClientCutText messages. A remote, authenticated attacker could use this
flaw to make Xvnc crash by sending specially crafted ClientCutText
messages, resulting in denial of service. (CVE-2017-7395)

* A buffer overflow flaw, leading to memory corruption, was found in
TigerVNC viewer. A remote malicious VNC server could use this flaw to crash
the client vncviewer process resulting in denial of service.
(CVE-2017-5581)

* A memory leak flaw was found in the way TigerVNC handled termination of
VeNCrypt connections. A remote unauthenticated attacker could repeatedly
send connection requests to the Xvnc server, causing it to consume large
amounts of memory resources over time, and ultimately leading to a denial
of service due to memory exhaustion. (CVE-2017-7392)

* A memory leak flaw was found in the way TigerVNC handled client
connections. A remote unauthenticated attacker could repeatedly send
connection requests to the Xvnc server, causing it to consume large amounts
of memory resources over time, and ultimately leading to a denial of
service due to memory exhaustion. (CVE-2017-7396)

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.4 Release Notes linked from the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1343899 - Disabling vncconfig window
1358090 - shared memory leakage in vncviewer
1388620 - [REBASE] Tigervnc from 1.3 to 1.8
1393971 - [RFE] systemd unit for Xvnc (not vncserver)
1410164 - tigervnc-server fails to remove /tmp files if not gracefully shut down
1413598 - [REBASE] Update fltk to 1.3.4 for tigervnc
1415547 - Rebuilding tigervnc SRPM stops at applying Patch101
1415712 - CVE-2017-5581 tigervnc: Buffer overflow in ModifiablePixelBuffer::fillRect
1418761 - CVE-2016-10207 tigervnc: VNC server can crash when TLS handshake terminates early
1438694 - CVE-2017-7392 tigervnc: SSecurityVeNCrypt memory leak
1438697 - CVE-2017-7393 tigervnc: Double free via crafted fences
1438700 - CVE-2017-7394 tigervnc: Server crash via long usernames
1438701 - CVE-2017-7395 tigervnc: Integer overflow in SMsgReader::readClientCutText
1438703 - CVE-2017-7396 tigervnc: SecurityServer and ClientServer memory leaks

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
fltk-1.3.4-1.el7.src.rpm
tigervnc-1.8.0-1.el7.src.rpm

noarch:
tigervnc-icons-1.8.0-1.el7.noarch.rpm
tigervnc-license-1.8.0-1.el7.noarch.rpm

x86_64:
fltk-1.3.4-1.el7.i686.rpm
fltk-1.3.4-1.el7.x86_64.rpm
fltk-debuginfo-1.3.4-1.el7.i686.rpm
fltk-debuginfo-1.3.4-1.el7.x86_64.rpm
tigervnc-1.8.0-1.el7.x86_64.rpm
tigervnc-debuginfo-1.8.0-1.el7.x86_64.rpm
tigervnc-server-1.8.0-1.el7.x86_64.rpm
tigervnc-server-minimal-1.8.0-1.el7.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

noarch:
tigervnc-server-applet-1.8.0-1.el7.noarch.rpm

x86_64:
fltk-debuginfo-1.3.4-1.el7.i686.rpm
fltk-debuginfo-1.3.4-1.el7.x86_64.rpm
fltk-devel-1.3.4-1.el7.i686.rpm
fltk-devel-1.3.4-1.el7.x86_64.rpm
fltk-fluid-1.3.4-1.el7.x86_64.rpm
fltk-static-1.3.4-1.el7.i686.rpm
fltk-static-1.3.4-1.el7.x86_64.rpm
tigervnc-debuginfo-1.8.0-1.el7.x86_64.rpm
tigervnc-server-module-1.8.0-1.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
tigervnc-1.8.0-1.el7.src.rpm

noarch:
tigervnc-license-1.8.0-1.el7.noarch.rpm

x86_64:
tigervnc-debuginfo-1.8.0-1.el7.x86_64.rpm
tigervnc-server-minimal-1.8.0-1.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

Source:
fltk-1.3.4-1.el7.src.rpm

noarch:
tigervnc-icons-1.8.0-1.el7.noarch.rpm
tigervnc-server-applet-1.8.0-1.el7.noarch.rpm

x86_64:
fltk-1.3.4-1.el7.i686.rpm
fltk-1.3.4-1.el7.x86_64.rpm
fltk-debuginfo-1.3.4-1.el7.i686.rpm
fltk-debuginfo-1.3.4-1.el7.x86_64.rpm
fltk-devel-1.3.4-1.el7.i686.rpm
fltk-devel-1.3.4-1.el7.x86_64.rpm
fltk-fluid-1.3.4-1.el7.x86_64.rpm
fltk-static-1.3.4-1.el7.i686.rpm
fltk-static-1.3.4-1.el7.x86_64.rpm
tigervnc-1.8.0-1.el7.x86_64.rpm
tigervnc-debuginfo-1.8.0-1.el7.x86_64.rpm
tigervnc-server-1.8.0-1.el7.x86_64.rpm
tigervnc-server-module-1.8.0-1.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
fltk-1.3.4-1.el7.src.rpm
tigervnc-1.8.0-1.el7.src.rpm

aarch64:
fltk-1.3.4-1.el7.aarch64.rpm
fltk-debuginfo-1.3.4-1.el7.aarch64.rpm
tigervnc-1.8.0-1.el7.aarch64.rpm
tigervnc-debuginfo-1.8.0-1.el7.aarch64.rpm
tigervnc-server-1.8.0-1.el7.aarch64.rpm
tigervnc-server-minimal-1.8.0-1.el7.aarch64.rpm

noarch:
tigervnc-icons-1.8.0-1.el7.noarch.rpm
tigervnc-license-1.8.0-1.el7.noarch.rpm

ppc64:
fltk-1.3.4-1.el7.ppc.rpm
fltk-1.3.4-1.el7.ppc64.rpm
fltk-debuginfo-1.3.4-1.el7.ppc.rpm
fltk-debuginfo-1.3.4-1.el7.ppc64.rpm
tigervnc-1.8.0-1.el7.ppc64.rpm
tigervnc-debuginfo-1.8.0-1.el7.ppc64.rpm
tigervnc-server-1.8.0-1.el7.ppc64.rpm
tigervnc-server-minimal-1.8.0-1.el7.ppc64.rpm

ppc64le:
fltk-1.3.4-1.el7.ppc64le.rpm
fltk-debuginfo-1.3.4-1.el7.ppc64le.rpm
tigervnc-1.8.0-1.el7.ppc64le.rpm
tigervnc-debuginfo-1.8.0-1.el7.ppc64le.rpm
tigervnc-server-1.8.0-1.el7.ppc64le.rpm
tigervnc-server-minimal-1.8.0-1.el7.ppc64le.rpm

s390x:
fltk-1.3.4-1.el7.s390.rpm
fltk-1.3.4-1.el7.s390x.rpm
fltk-debuginfo-1.3.4-1.el7.s390.rpm
fltk-debuginfo-1.3.4-1.el7.s390x.rpm
tigervnc-1.8.0-1.el7.s390x.rpm
tigervnc-debuginfo-1.8.0-1.el7.s390x.rpm
tigervnc-server-1.8.0-1.el7.s390x.rpm
tigervnc-server-minimal-1.8.0-1.el7.s390x.rpm

x86_64:
fltk-1.3.4-1.el7.i686.rpm
fltk-1.3.4-1.el7.x86_64.rpm
fltk-debuginfo-1.3.4-1.el7.i686.rpm
fltk-debuginfo-1.3.4-1.el7.x86_64.rpm
tigervnc-1.8.0-1.el7.x86_64.rpm
tigervnc-debuginfo-1.8.0-1.el7.x86_64.rpm
tigervnc-server-1.8.0-1.el7.x86_64.rpm
tigervnc-server-minimal-1.8.0-1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

aarch64:
fltk-debuginfo-1.3.4-1.el7.aarch64.rpm
fltk-devel-1.3.4-1.el7.aarch64.rpm
fltk-fluid-1.3.4-1.el7.aarch64.rpm
fltk-static-1.3.4-1.el7.aarch64.rpm
tigervnc-debuginfo-1.8.0-1.el7.aarch64.rpm
tigervnc-server-module-1.8.0-1.el7.aarch64.rpm

noarch:
tigervnc-server-applet-1.8.0-1.el7.noarch.rpm

ppc64:
fltk-debuginfo-1.3.4-1.el7.ppc.rpm
fltk-debuginfo-1.3.4-1.el7.ppc64.rpm
fltk-devel-1.3.4-1.el7.ppc.rpm
fltk-devel-1.3.4-1.el7.ppc64.rpm
fltk-fluid-1.3.4-1.el7.ppc64.rpm
fltk-static-1.3.4-1.el7.ppc.rpm
fltk-static-1.3.4-1.el7.ppc64.rpm
tigervnc-debuginfo-1.8.0-1.el7.ppc64.rpm
tigervnc-server-module-1.8.0-1.el7.ppc64.rpm

ppc64le:
fltk-debuginfo-1.3.4-1.el7.ppc64le.rpm
fltk-devel-1.3.4-1.el7.ppc64le.rpm
fltk-fluid-1.3.4-1.el7.ppc64le.rpm
fltk-static-1.3.4-1.el7.ppc64le.rpm
tigervnc-debuginfo-1.8.0-1.el7.ppc64le.rpm
tigervnc-server-module-1.8.0-1.el7.ppc64le.rpm

s390x:
fltk-debuginfo-1.3.4-1.el7.s390.rpm
fltk-debuginfo-1.3.4-1.el7.s390x.rpm
fltk-devel-1.3.4-1.el7.s390.rpm
fltk-devel-1.3.4-1.el7.s390x.rpm
fltk-fluid-1.3.4-1.el7.s390x.rpm
fltk-static-1.3.4-1.el7.s390.rpm
fltk-static-1.3.4-1.el7.s390x.rpm

x86_64:
fltk-debuginfo-1.3.4-1.el7.i686.rpm
fltk-debuginfo-1.3.4-1.el7.x86_64.rpm
fltk-devel-1.3.4-1.el7.i686.rpm
fltk-devel-1.3.4-1.el7.x86_64.rpm
fltk-fluid-1.3.4-1.el7.x86_64.rpm
fltk-static-1.3.4-1.el7.i686.rpm
fltk-static-1.3.4-1.el7.x86_64.rpm
tigervnc-debuginfo-1.8.0-1.el7.x86_64.rpm
tigervnc-server-module-1.8.0-1.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
fltk-1.3.4-1.el7.src.rpm
tigervnc-1.8.0-1.el7.src.rpm

noarch:
tigervnc-icons-1.8.0-1.el7.noarch.rpm
tigervnc-license-1.8.0-1.el7.noarch.rpm

x86_64:
fltk-1.3.4-1.el7.i686.rpm
fltk-1.3.4-1.el7.x86_64.rpm
fltk-debuginfo-1.3.4-1.el7.i686.rpm
fltk-debuginfo-1.3.4-1.el7.x86_64.rpm
tigervnc-1.8.0-1.el7.x86_64.rpm
tigervnc-debuginfo-1.8.0-1.el7.x86_64.rpm
tigervnc-server-1.8.0-1.el7.x86_64.rpm
tigervnc-server-minimal-1.8.0-1.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

noarch:
tigervnc-server-applet-1.8.0-1.el7.noarch.rpm

x86_64:
fltk-debuginfo-1.3.4-1.el7.i686.rpm
fltk-debuginfo-1.3.4-1.el7.x86_64.rpm
fltk-devel-1.3.4-1.el7.i686.rpm
fltk-devel-1.3.4-1.el7.x86_64.rpm
fltk-fluid-1.3.4-1.el7.x86_64.rpm
fltk-static-1.3.4-1.el7.i686.rpm
fltk-static-1.3.4-1.el7.x86_64.rpm
tigervnc-debuginfo-1.8.0-1.el7.x86_64.rpm
tigervnc-server-module-1.8.0-1.el7.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/

7. References:

https://access.redhat.com/security/cve/CVE-2016-10207
https://access.redhat.com/security/cve/CVE-2017-5581
https://access.redhat.com/security/cve/CVE-2017-7392
https://access.redhat.com/security/cve/CVE-2017-7393
https://access.redhat.com/security/cve/CVE-2017-7394
https://access.redhat.com/security/cve/CVE-2017-7395
https://access.redhat.com/security/cve/CVE-2017-7396
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.4_Release_Notes/index.html

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2017 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iD8DBQFZgOqaXlSAg2UNWIIRAp/cAJ9F1dYdqxlJTpzsV9KUEKK67xq6LwCfUVqb
gW2q/s8OKDowmUL3FPH2fKo=
=0uca
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce
Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close