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USN-826-1: Mono vulnerabilities

26 August 2009

Mono vulnerabilities

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Details

It was discovered that the XML HMAC signature system did not correctly
check certain lengths. If an attacker sent a truncated HMAC, it could
bypass authentication, leading to potential privilege escalation.
(CVE-2009-0217)

It was discovered that Mono did not properly escape certain attributes in
the ASP.net class libraries which could result in browsers becoming
vulnerable to cross-site scripting attacks when processing the output. With
cross-site scripting vulnerabilities, if a user were tricked into viewing
server output during a crafted server request, a remote attacker could
exploit this to modify the contents, or steal confidential data (such as
passwords), within the same domain. This issue only affected Ubuntu 8.04
LTS. (CVE-2008-3422)

It was discovered that Mono did not properly filter CRLF injections in the
query string. If a user were tricked into viewing server output during a
crafted server request, a remote attacker could exploit this to modify the
contents, steal confidential data (such as passwords), or perform
cross-site request forgeries. This issue only affected Ubuntu 8.04 LTS.
(CVE-2008-3906)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Related notices

  • USN-903-1: openoffice.org, openoffice.org-core
  • USN-814-1: openjdk-6, openjdk-6-jre-lib, openjdk-6-jre, icedtea6-plugin