Antivir creates insecure temporary files

antivir-tmpfile-insecure (14214) The risk level is classified as MediumMedium Risk

Description:

Antivir, when running on Linux platforms, creates insecure temporary files, which could allow a local attacker to launch a symlink attack. A local attacker could create a symbolic link for a file in /tmp to an arbitrary file on the system, which would allow the attacker to create or overwrite files on the system.

*CVSS:

Base Score: 2.5
  Access Vector: Local
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 1.8
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

File Manipulation

Remedy:

Upgrade to the latest version of AntiVir (2.0.9-12 or later), available from the AntiVir Web site. See References.

References:

  • BugTraq Mailing List, Tue Jan 13 2004 - 12:37:30 CST : symlink vul for Antivir / Linux Version 2.0.9-9 (maybe lower).
  • BID-9413: H+BEDV AntiVir Insecure Temporary File Creation Symbolic Link Vulnerability
  • CVE-2004-0058: Antivir / Linux 2.0.9-9, and possibly earlier versions, allows local users to overwrite arbitrary files via a symlink attack on the .pid_antivir_$$ temporary file.
  • OSVDB ID: 3496: H+BEDV AntiVir Insecure Temp File Privilege Escalation
  • SA10620: H+BEDV AntiVir Insecure Temporary File Creation Vulnerability
  • SECTRACK ID: 1008702: AntiVir Temporary File Symlink Flaw Lets Local Users Overwrite Files With Root Privileges

Platforms Affected:

  • Antivir Antivir 2.0.9-9

Reported:

Jan 13, 2004

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