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LPRng Print Queue Control Vulnerability
The LPRng software is an enhanced, extended, and portable version of the Berkeley LPR software (the standard UNIX printer spooler) that ships with Debian GNU/Linux. When root controls the print queue, the authentication that is used is based on whether the client source port connecting to lpd is privileged or not. Apparently, lpd does not check the source port properly, and it is possible for any local user to control the print queue with a modified client. The consequences of this vulnerability being exploited is a compromise of print queue control. |
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