Light with specially-crafted channel name allows remote attacker to execute script code

light-channel-execute-script (9943) The risk level is classified as HighHigh Risk

Description:

Light could allow a remote attacker to execute malicious script code on another user's system by tricking the user into joining a channel with embedded EPIC4 script code in the channel name.


Consequences:

Gain Privileges

Remedy:

Upgrade to the latest versions of Light (2.7.30p5 or later) and (2.8pre10 or later), as listed in the BugTraq Mailing List posting dated Thu Aug 22 2002 - 14:06:50 CDT. See References.

For Debian GNU/Linux 3.0 (woody):
Upgrade to the latest epic4-script-light package ( 2.7.30p5 or later), as listed in DSA-156-1. See References.

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

References:

  • BugTraq Mailing List, Thu Aug 22 2002 - 14:06:50 CDT : Light Security Advisory: Remotely-exploitable code execution .
  • BID-5555: Light Channel Name Arbitrary Command Execution Vulnerability
  • CVE-2002-0984: The IRC script included in Light 2.7.x before 2.7.30p5, and 2.8.x before 2.8pre10, running EPIC allows remote attackers to execute arbitrary code if the user joins a channel whose topic includes EPIC4 code.
  • DSA-156: epic4-script-light -- arbitrary script execution
  • OSVDB ID: 5040: Light IRC Script Channel Name Arbitrary Code Execution

Platforms Affected:

  • Debian Debian Linux 3.0
  • J. S. Connell Light prior to 2.7.30p5
  • J. S. Connell Light prior to 2.8pre10

Reported:

Aug 22, 2002

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