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

Ubuntu Security Notice USN-2547-1

Ubuntu Security Notice USN-2547-1
Posted Mar 24, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2547-1 - It was discovered that the Mono TLS implementation was vulnerable to the SKIP-TLS vulnerability. A remote attacker could possibly use this issue to perform client impersonation attacks. It was discovered that the Mono TLS implementation was vulnerable to the FREAK vulnerability. A remote attacker or a man in the middle could possibly use this issue to force the use of insecure ciphersuites. Various other issues were also addressed.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2011-0992, CVE-2012-3543, CVE-2015-2318, CVE-2015-2319, CVE-2015-2320
SHA-256 | df47982100cec85a2943f68bea9742b67b9e2b5b58f72ad84ed804375204ff53

Ubuntu Security Notice USN-2547-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2547-1
March 24, 2015

mono vulnerabilities
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in Mono.

Software Description:
- mono: Mono is a platform for running and developing applications

Details:

It was discovered that the Mono TLS implementation was vulnerable to the
SKIP-TLS vulnerability. A remote attacker could possibly use this issue
to perform client impersonation attacks. (CVE-2015-2318)

It was discovered that the Mono TLS implementation was vulnerable to the
FREAK vulnerability. A remote attacker or a man in the middle could
possibly use this issue to force the use of insecure ciphersuites.
(CVE-2015-2319)

It was discovered that the Mono TLS implementation still supported a
fallback to SSLv2. This update removes the functionality as use of SSLv2 is
known to be insecure. (CVE-2015-2320)

It was discovered that Mono incorrectly handled memory in certain
circumstances. A remote attacker could possibly use this issue to cause
Mono to crash, resulting in a denial of service, or to obtain sensitive
information. This issue only applied to Ubuntu 12.04 LTS. (CVE-2011-0992)

It was discovered that Mono incorrectly handled hash collisions. A remote
attacker could possibly use this issue to cause Mono to crash, resulting in
a denial of service. This issue only applied to Ubuntu 12.04 LTS.
(CVE-2012-3543)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.10:
libmono-2.0-1 3.2.8+dfsg-4ubuntu2.1
mono-runtime 3.2.8+dfsg-4ubuntu2.1

Ubuntu 14.04 LTS:
libmono-2.0-1 3.2.8+dfsg-4ubuntu1.1
mono-runtime 3.2.8+dfsg-4ubuntu1.1

Ubuntu 12.04 LTS:
libmono-2.0-1 2.10.8.1-1ubuntu2.3
mono-runtime 2.10.8.1-1ubuntu2.3

After a standard system update you need to restart Mono applications to
make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2547-1
CVE-2011-0992, CVE-2012-3543, CVE-2015-2318, CVE-2015-2319,
CVE-2015-2320

Package Information:
https://launchpad.net/ubuntu/+source/mono/3.2.8+dfsg-4ubuntu2.1
https://launchpad.net/ubuntu/+source/mono/3.2.8+dfsg-4ubuntu1.1
https://launchpad.net/ubuntu/+source/mono/2.10.8.1-1ubuntu2.3
Login or Register to add favorites

File Archive:

June 2024

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