CVE Vulnerabilities

CVE-2008-2266

Improper Link Resolution Before File Access ('Link Following')

Published: May 16, 2008 | Modified: Aug 08, 2017
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
4.4 MEDIUM
AV:L/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
UNTRIAGED

uulib/uunconc.c in UUDeview 0.5.20, as used in nzbget before 0.3.0 and possibly other products, allows local users to overwrite arbitrary files via a symlink attack on a temporary filename generated by the tempnam function. NOTE: this may be a CVE-2004-2265 regression.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Name Vendor Start Version End Version
Nzbget Nzbget * 0.2.2 (including)
Nzbget Nzbget 0.1.0a (including) 0.1.0a (including)
Nzbget Nzbget 0.1.1 (including) 0.1.1 (including)
Nzbget Nzbget 0.1.2 (including) 0.1.2 (including)
Nzbget Nzbget 0.2.0 (including) 0.2.0 (including)
Nzbget Nzbget 0.2.1 (including) 0.2.1 (including)
Uudeview Uudeview 0.5.20 (including) 0.5.20 (including)
Uudeview Ubuntu dapper *
Uudeview Ubuntu feisty *
Uudeview Ubuntu gutsy *
Uudeview Ubuntu hardy *
Uudeview Ubuntu upstream *

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

References