LPRng runlpr could allow an attacker to gain local root privileges

lprng-runlpr-gain-privileges (10525) The risk level is classified as HighHigh Risk

Description:

The LPRng print spooler daemon included with multiple Linux distributions could allow a local attacker to gain root privileges, caused by a vulnerability in the runlpr program. The runlpr program allows a user with lp privileges to execute lpr with root privileges. A local attacker could exploit this vulnerability by passing malicious command-line arguments to lpr, which would be executed on the system with root privileges.


Consequences:

Gain Privileges

Remedy:

For SuSE Linux:
Upgrade to the latest html2ps and lpdfilter packages, as listed below. Refer to SuSE Security Announcement SuSE-SA:2002:040 for more information. See References.

SuSE 8.1 (Intel): html2ps-1.0b3-458 or later and lpdfilter-0.43-63 or later
SuSE 8.0 (Intel): html2ps-1.0b3-456 or later and lpdfilter-0.42-155 or later
SuSE 7.3 (Intel): html2ps-1.0b3-457 or later
SuSE 7.2 (Intel): html2ps-1.0b1-432 or later
SuSE 7.1 (Intel): html2ps-1.0b1-431 or later
SuSE 7.0 (Intel): html2ps-1.0b1-428 or later
SuSE 7.3 (Sparc): html2ps-1.0b3-88 or later
SuSE 7.0 (AXP Alpha): html2ps-1.0b1-328 or later
SuSE 7.1 (PPC Power PC): html2ps-1.0b1-303 or later
SuSE 7.0 (PPC Power PC): html2ps-1.0b1-302 or later

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

References:

  • LPRng Web site: LPRng.
  • BID-6077: LPRNG runlpr Local Privilege Escalation Vulnerability
  • CVE-2002-1285: runlpr in the LPRng package allows the local lp user to gain root privileges via certain command line arguments.
  • OSVDB ID: 12643: LPRng runlpr Command Line Overflow

Platforms Affected:

  • Patrick Powell LPRng
  • SUSE SuSE Linux 7.0
  • SUSE SuSE Linux 7.1
  • SUSE SuSE Linux 7.2
  • SUSE SuSE Linux 7.3
  • SUSE SuSE Linux 8.0
  • SUSE SuSE Linux 8.1

Reported:

Oct 31, 2002

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