Samba mksmbpasswd.sh could allow an attacker to gain access to user`s account

samba-mksmbpasswd-gain-access (15132) The risk level is classified as MediumMedium Risk

Description:

Samba could allow a remote attacker to gain unauthorized access to a user's account. The mksmbpasswd.sh shell script creates accounts with improper password initialization functionality. A remote attacker could supply an invalid password to gain unauthorized access to another user's account.


Consequences:

Gain Access

Remedy:

Upgrade to the latest version of Samba (3.0.2 or later), available from the Samba Web site. See References.

For Red Hat Linux:
Upgrade to the latest samba package, as listed below. Refer to RHSA-2004:064-08 for more information. See References.

Red Hat Enterprise Linux AS (v. 3), ES (v. 3), and WS (v. 3): 3.0.2-6.3E or later

For other distributions:
Contact your vendor for upgrade or patch information.

References:

  • CIAC Information Bulletin O-078: Samba - Unauthorized Access to SMB Accounts.
  • Samba Web site: Download.
  • BID-9637: Samba Mksmbpasswd.sh Insecure User Account Creation Vulnerability
  • CVE-2004-0082: The mksmbpasswd shell script (mksmbpasswd.sh) in Samba 3.0.0 and 3.0.1, when creating an account but marking it as disabled, may overwrite the user password with an uninitialized buffer, which could enable the account with a more easily guessable password.
  • OSVDB ID: 3919: Samba mksmbpasswd.sh Uninitialized Passwords
  • RHSA-2004-064: samba security update

Platforms Affected:

  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 3 AS
  • Samba Samba 3.0
  • Samba Samba 3.0.1

Reported:

Feb 09, 2004

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