Path traversal in rdesktop

1) Path traversal

EUVDB-ID: #VU45030

Risk: Medium

CVSSv4.0: 0.6 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-1595

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:rdesktop_org:rdesktop:1.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:rdesktop_org:rdesktop:1.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:rdesktop_org:rdesktop:1.2.0:*:*:*:*:*:*:*

External links

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

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.