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6.9

AIX lpd service lets privileged printer users become root

CVE-2007-4236 · published 19 years ago
Summary

On AIX 5.2 and 5.3, the printer daemon (lpd) can be tricked by a user who belongs to the printq group into executing code with full system privileges. This could let that user gain complete control over the server. Apply the latest IBM security update for AIX and restrict the printq group to only trusted accounts.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
ibm aix 5.2
5.3
cpe:2.3:o:ibm:aix:5.2:*:*:*:*:*:*:*
Original advisory text
Buffer overflow in lpd in bos.rte.printers in AIX 5.2 and 5.3 allows local users with printq group privileges to gain root privileges.
Buffer overflow in lpd in bos.rte.printers in AIX 5.2 and 5.3 allows local users with printq group privileges to gain root privileges.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
6.9 Medium
Exploitation
<1% chance of attack within 30 days
Timeline
Published8 Aug 2007
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2007-4236 · NVD
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