Date: Tue, 9 Aug 2011 23:33:04 -0400 From: Dan Rosenberg <dan.j.rosenberg@...il.com> To: oss-security@...ts.openwall.com Cc: csmall@...ian.org Subject: CVE request (and disclosure): ax25d missing setuid return code check The AX.25 daemon (ax25d), typically provided in the ax25-tools package, allows administrators to associate incoming AX.25, NET/ROM, and ROSE traffic with the execution of an endpoint program (most commonly "node"), which is run under a specified user account. Because ax25d is missing a check on the return code for a setuid call responsible for dropping privileges to the specified user, it may be possible to cause setuid to fail, after which the chosen program will be executed with root privileges. In other words, if you're in the business of handing out unprivileged shells over amateur radio (don't we all? :p ), this would allow for remote compromise. -Dan
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