PGP with "file wiping" enabled could reveal encrypted data on NTFS

pgp-ntfs-reveal-data (9044) The risk level is classified as MediumMedium Risk

Description:

Network Associates PGP Desktop Security, PGP Corporate Desktop, and PGP Freeware could allow a local attacker to access sensitive information on Microsoft Windows 2000 systems using encrypted NTFS. If "file wiping" is enabled in PGP and files are encrypted, temporary file copies that are made during encryption are not deleted once the encryption process is complete. This could allow a local attacker to access these temporary files and possibly recover sensitive information.


Consequences:

Obtain Information

Remedy:

Apply the PGP Hotfix dated 8-May-2002, available from Network Associates Web site. See References.

References:

  • BugTraq Mailing List, Wed May 08 2002 - 14:34:11 CDT: NTFS and PGP interact to expose EFS encrypted data.
  • Network Associates Web site: Hotfix for PGP Corporate Desktop 7.1, PGP Personal Security 7.0.3 & PGP Freeware 7.0.3.
  • PGP Hotfix Release Notes: HOTFIX FOR EFS AND FILE WIPING.
  • BID-4702: Multiple PGP Products with Windows EFS Plaintext File Disclosure Vulnerability
  • CVE-2002-0788: An interaction between PGP 7.0.3 with the wipe deleted files option, when used on Windows Encrypted File System (EFS), creates a cleartext temporary files that cannot be wiped or deleted due to strong permissions, which could allow certain local users or attackers with physical access to obtain cleartext information.
  • OSVDB ID: 4363: NAI PGP NTFS EFS Data File Wiping Weakness

Platforms Affected:

  • PGP Corporate Desktop 7.1
  • PGP Freeware 7.0.3
  • PGP Personal Security 7.0.3

Reported:

May 08, 2002

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 the author/distributor (IBM Internet Security Systems X-Force) 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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