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USN-646-1: rdesktop vulnerabilities

18 September 2008

rdesktop vulnerabilities

Reduce your security exposure

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Releases

Packages

Details

It was discovered that rdesktop did not properly validate the length
of packet headers when processing RDP requests. If a user were tricked
into connecting to a malicious server, an attacker could cause a
denial of service or possible execute arbitrary code with the
privileges of the user. (CVE-2008-1801)

Multiple buffer overflows were discovered in rdesktop when processing
RDP redirect requests. If a user were tricked into connecting to a
malicious server, an attacker could cause a denial of service or
possible execute arbitrary code with the privileges of the user.
(CVE-2008-1802)

It was discovered that rdesktop performed a signed integer comparison
when reallocating dynamic buffers which could result in a heap-based
overflow. If a user were tricked into connecting to a malicious
server, an attacker could cause a denial of service or possible
execute arbitrary code with the privileges of the user.
(CVE-2008-1802)

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

Update instructions

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

Ubuntu 8.04
Ubuntu 7.10
Ubuntu 7.04
Ubuntu 6.06

In general, a standard system upgrade is sufficient to effect the
necessary changes.