USN-1517-1: Mono vulnerabilities

Ubuntu Security Notice USN-1517-1

25th July, 2012

mono vulnerabilities

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

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.04 LTS

Summary

Mono could be made to expose sensitive information over the network.

Software description

  • mono - Mono is a platform for running and developing applications

Details

It was discovered that the Mono System.Web library incorrectly filtered
certain error messages related to forbidden files. If a user were tricked
into opening a specially crafted URL, an attacker could possibly exploit
this to conduct cross-site scripting (XSS) attacks. (CVE-2012-3382)

It was discovered that the Mono System.Web library incorrectly handled the
EnableViewStateMac property. If a user were tricked into opening a
specially crafted URL, an attacker could possibly exploit this to conduct
cross-site scripting (XSS) attacks. This issue only affected Ubuntu
10.04 LTS. (CVE-2010-4159)

Update instructions

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

Ubuntu 12.04 LTS:
libmono-system-web2.0-cil 2.10.8.1-1ubuntu2.2
libmono-system-web4.0-cil 2.10.8.1-1ubuntu2.2
Ubuntu 11.10:
libmono-system-web2.0-cil 2.10.5-1ubuntu0.1
libmono-system-web4.0-cil 2.10.5-1ubuntu0.1
Ubuntu 11.04:
libmono-system-web2.0-cil 2.6.7-5ubuntu3.1
libmono-system-web1.0-cil 2.6.7-5ubuntu3.1
Ubuntu 10.04 LTS:
libmono-system-web2.0-cil 2.4.4~svn151842-1ubuntu4.1
libmono-system-web1.0-cil 2.4.4~svn151842-1ubuntu4.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2010-4159, CVE-2012-3382