Just noticed that there was a vulnerability found with rdesktop in Ubuntu (and probably other systems as well).
For 99% of the people, running a software update or typing the following will fix it:
sudo apt-get update
sudo atp-get dist-upgrade
If you see an rdesktop update downloaded, you’re good to go.
Here are the gory details.
=========================================================== Ubuntu Security Notice USN-646-1 September 18, 2008 rdesktop vulnerabilities CVE-2008-1801, CVE-2008-1802, CVE-2008-1803 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 7.04 Ubuntu 7.10 Ubuntu 8.04 LTS This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: rdesktop 1.4.1-1.1ubuntu0.6.06.1 Ubuntu 7.04: rdesktop 1.5.0-1ubuntu1.1 Ubuntu 7.10: rdesktop 1.5.0-2ubuntu0.1 Ubuntu 8.04 LTS: rdesktop 1.5.0-3+cvs20071006ubuntu0.1 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: 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)
Technorati Tags: Ubuntu, rdesktop, linux, vulnerability
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March 3rd, 2011 at 11:40 am
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