Vulnerability identifier: #VU45030

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2011-1595

CWE-ID: CWE-22

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
rdesktop
Server applications / Other server solutions

Vendor: rdesktop.org

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the disk_create function in disk.c in rdesktop before 1.7.0, when disk redirection is enabled,. A remote authenticated attacker can send a specially crafted HTTP request and remote RDP servers to read or overwrite arbitrary files via a . (dot dot) in a pathname.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

rdesktop: 1.0.0 - 1.5.0

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External links
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061170.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061309.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061316.html
http://rdesktop.svn.sourceforge.net/viewvc/rdesktop?view=revision&revision=1626
http://secunia.com/advisories/44881
http://secunia.com/advisories/51023
http://security.gentoo.org/glsa/glsa-201210-03.xml
http://securitytracker.com/id?1025525
http://sourceforge.net/mailarchive/message.php?msg_id=27376554
http://sourceforge.net/projects/rdesktop/files/rdesktop/1.7.0/rdesktop-1.7.0.tar.gz/download
http://www.mandriva.com/security/advisories?name=MDVSA-2011:102
http://www.securityfocus.com/bid/47419
http://www.ubuntu.com/usn/USN-1136-1
http://bugzilla.redhat.com/show_bug.cgi?id=676252
http://rhn.redhat.com/errata/RHSA-2011-0506.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.