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SecurityAlert : 2700 CVE : CVE-2007-2447 SecurityRisk : High  (About) Remote Exploit : Yes Local Exploit : No Exploit Available : No Credit : Joshua J. Drake, iDefense Published : 17.05.2007
Advisory Content : -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ========================================================== == == Subject: Remote Command Injection Vulnerability == CVE ID#: CVE-2007-2447 == == Versions: Samba 3.0.0 - 3.0.25rc3 (inclusive) == == Summary: Unescaped user input parameters are passed == as arguments to /bin/sh allowing for remote == command execution == ========================================================== =========== Description =========== This bug was originally reported against the anonymous calls to the SamrChangePassword() MS-RPC function in combination with the "username map script" smb.conf option (which is not enabled by default). After further investigation by Samba developers, it was determined that the problem was much broader and impacts remote printer and file share management as well. The root cause is passing unfiltered user input provided via MS-RPC calls to /bin/sh when invoking externals scripts defined in smb.conf. However, unlike the "username map script" vulnerability, the remote file and printer management scripts require an authenticated user session. ================== Patch Availability ================== A patch against Samba 3.0.24 has been posted at http://www.samba.org/samba/security/ ========== Workaround ========== This defect may be alleviated by removing all defined external script invocations (username map script, add printer command, etc...) from smb.conf. The Samba Team always encourages users to run the latest stable release as a defense against attacks. If this is not immediately possible, administrators should read the "Server Security" documentation found at http://www.samba.org/samba/docs/server_security.html ======= Credits ======= This vulnerability was discovered by an anonymous researcher and reported to Samba developers by Joshua J. Drake, iDefense Labs (http://www.idefense.com/), as part of their Vulnerability Contributor Program. The time line is as follows: * May 7, 2007: Initial defect disclosure to the security (at) samba (dot) org [email concealed] email alias. * May 7, 2007: Initial developer response by Samba developer Gerald Carter. * May 9, 2007: Patch released by Samba developer Jeremy Allison to iDefense for testing. * May 10, Announcement to vendor-sec mailing list * May 14, 2007: Public announcement of the security issue. ========================================================== == Our Code, Our Bugs, Our Responsibility. == The Samba Team ========================================================== -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGR5YAIR7qMdg1EfYRAn91AKDpPgSVlYSbMEkxpIAWG9rD1Cl6kwCffrRO VCdq+1LtZsACYv7Yt1sQKyE= =wtvM -----END PGP SIGNATURE-----  Feedback : If you have additional information or notice any errors regarding this security advisory, please use contact form or email us at info()securityreason()com. |
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libc:fts_*() Multiple Denial of Service
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