A time-of-check time-of-use (TOCTOU) race condition flaw was found in the way ProFTPD, flexible, stable and highly-configurable FTP server, handled MKD/XMKD FTP commands when the UserOwner directive was involved. A local attacker could use this flaw to possibly escalate their privileges via symbolic-link attacks on directories, created by ProFTPD prior UserOwner ownership was applied. Upstream bug report: [1] http://bugs.proftpd.org/show_bug.cgi?id=3841 Relevant upstream patch: [2] http://bugs.proftpd.org/show_bug.cgi?id=3841#c8 References: [3] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=697524
This issue affects the versions of the proftpd package, as shipped with Fedora release of 16 and 17. Please schedule an update. -- This issue affects the versions of the proftpd package, as shipped with Fedora EPEL 5 and 6. Please schedule an update.
Created proftpd tracking bugs for this issue Affects: fedora-all [bug 892718] Affects: epel-all [bug 892719]
The CVE identifier of CVE-2012-6095 has been assigned to this issue: http://www.openwall.com/lists/oss-security/2013/01/07/3
proftpd-1.3.4b-5.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
proftpd-1.3.4b-5.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.
proftpd-1.3.4b-5.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.
proftpd-1.3.3g-2.el5 has been pushed to the Fedora EPEL 5 stable repository. If problems still persist, please make note of it in this bug report.
proftpd-1.3.3g-2.el6 has been pushed to the Fedora EPEL 6 stable repository. If problems still persist, please make note of it in this bug report.
This has been addressed in all current Fedora and EPEL releases. Can we close the bug now?
Yes, thank you!