UUDeview tempnam function symlink

uudeview-tempnam-symlink (42407)

Medium Risk

Description:

UUDeview could allow a local attacker to launch a symlink attack. The tempnam function in uunconc.c uses a predictable temporary file insecurely. A local attacker could exploit this vulnerability by creating a symbolic link from the temporary file to other files on the system, which would allow the attacker to overwrite arbitrary files on the system with elevated privileges.

*CVSS:

Base Score:	3.3
Access Vector:	Local
Access Complexity:	Medium
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	2.9
Exploitability:	High
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

File Manipulation

Remedy:

Refer to Debian Bug report logs - #480972 for patch, upgrade or suggested workaround information. See References.

References:

• Debian Bug report logs - #480972: vulnerable to symlink attacks.
• UUDeview Web page: UUDeview Home Page.
• BID-29211: UUDeview Insecure Temporary File Creation Vulnerability
• CVE-2008-2266: 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.
• SA30171: UUDeview Insecure Temporary File Creation

Platforms Affected:

• UUDeview UUDeview 0.5.20

Reported:

May 13, 2008

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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