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SuSE Security Announcement
by thomas＠suse.de 30 Aug '99

30 Aug '99

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: cron-3.0.1-75 (Vixie Cron) and previous versions Date: Fri Aug 27 17:56:48 CEST 1999 Affected: maybe all Unix operatingsystems using crond ______________________________________________________________________________ Some security holes were discovered in the package mentioned above. Please update as soon as possible or disable the service if you are using this software on your SuSE Linux installation(s). Other Linux distributions or operating systems might be affected as well, please contact your vendor for information about this issue. Please note, that that we provide this information on as "as-is" basis only. There is no warranty whatsoever and no liability for any direct, indirect or incidental damage arising from this information or the installation of the update package. _____________________________________________________________________________ 1. Problem Description Three security threats were found in the vixie crond, which is shipped with SuSE Linux. 1) no boundchecking on a local buffer, while copying data from MAILTO 2) passing invalid options to sendmail 3) it doesn't drop root privileges while sending acknowledge mail to a user 2. Impact 1) local root compromise by putting arbitrary code on the stack 2/3) triggering a local denial-of-service attack by starting alot of sendmail daemons execute sendmail with options that only root could apply (like '-C'), which also leads to local root compromise 3. Solution Updated the crond package from our FTP server. ______________________________________________________________________________ Here are the md5 checksums of the upgrade packages, please verify these before installing the new packages: bfc9ab01fdfd36eebb3cc398bbb34c37 cron-3.0.1-84.i386.rpm (6.2) 8998dbecf020d8a6f7ba1a2885f986da cron-3.0.1-82.i386.rpm (6.1) ______________________________________________________________________________ You will find the update on our ftp-Server: ftp://ftp.suse.com/pub/suse/i386/update/6.2/a1/cron-3.0.1-84.i386.rpm ftp://ftp.suse.com/pub/suse/i386/update/6.1/a1/cron-3.0.1-82.i386.rpm Webpage for patches: http://www.suse.de/patches/index.html or try the following web pages for a list of mirrors: http://www.suse.de/ftp.html http://www.suse.com/ftp_new.html ______________________________________________________________________________ SuSE has got two free security mailing list services to which any interested party may subscribe: use-security(a)suse.com - unmoderated and for general/linux/SuSE security discussions. All SuSE security announcements are send to this list. use-security-announce(a)suse.com - SuSE's announce-only mailing list. Only SuSE's security annoucements are sent to this list. To subscribe, send an email to majordomo(a)suse.com with the text subscribe suse-security or subscribe suse-security-announce in the body of the message. Or just issue a echo subscribe suse-security | mail majordomo(a)suse.com or echo subscribe suse-security-announce | mail majordomo(a)suse.com ______________________________________________________________________________ If you want to report *NEW* security bugs in the SuSE Linux Distribution please send an email to security(a)suse.de or call our support line. You may use pgp with the public key below to ensure confidentiality. ______________________________________________________________________________ This information is provided freely to everyone interested and may be redistributed provided that it is not altered in any way. Type Bits/KeyID Date User ID pub 2048/3D25D3D9 1999/03/06 SuSE Security Team <security(a)suse.de> - -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.3i mQENAzbhLQQAAAEIAKAkXHe0lWRBXLpn38hMHy03F0I4Sszmoc8aaKJrhfhyMlOA BqvklPLE2f9UrI4Xc860gH79ZREwAgPt0pi6+SleNFLNcNFAuuHMLQOOsaMFatbz JR9i4m/lf6q929YROu5zB48rBAlcfTm+IBbijaEdnqpwGib45wE/Cfy6FAttBHQh 1Kp+r/jPbf1mYAvljUfHKuvbg8t2EIQz/5yGp+n5trn9pElfQO2cRBq8LFpf1l+U P7EKjFmlOq+Gs/fF98/dP3DfniSd78LQPq5vp8RL8nr/o2i7jkAQ33m4f1wOBWd+ cZovrKXYlXiR+Bf7m2hpZo+/sAzhd7LmAD0l09kABRG0JVN1U0UgU2VjdXJpdHkg VGVhbSA8c2VjdXJpdHlAc3VzZS5kZT6JARUDBRA24S1H5Fiyh7HKPEUBAVcOB/9b yHYji1/+4Xc2GhvXK0FSJN0MGgeXgW47yxDL7gmR4mNgjlIOUHZj0PEpVjWepOJ7 tQS3L9oP6cpj1Fj/XxuLbkp5VCQ61hpt54coQAvYrnT9rtWEGN+xmwejT1WmYmDJ xG+EGBXKr+XP69oIUl1E2JO3rXeklulgjqRKos4cdXKgyjWZ7CP9V9daRXDtje63 Om8gwSdU/nCvhdRIWp/Vwbf7Ia8iZr9OJ5YuQl0DBG4qmGDDrvImgPAFkYFzwlqo choXFQ9y0YVCV41DnR+GYhwl2qBd81T8aXhihEGPIgaw3g8gd8B5o6mPVgl+nJqI BkEYGBusiag2pS6qwznZiQEVAwUQNuEtBHey5gA9JdPZAQFtOAf+KVh939b0J94u v/kpg4xs1LthlhquhbHcKNoVTNspugiC3qMPyvSX4XcBr2PC0cVkS4Z9PY9iCfT+ x9WM96g39dAF+le2CCx7XISk9XXJ4ApEy5g4AuK7NYgAJd39PPbERgWnxjxir9g0 Ix30dS30bW39D+3NPU5Ho9TD/B7UDFvYT5AWHl3MGwo3a1RhTs6sfgL7yQ3U+mvq MkTExZb5mfN1FeaYKMopoI4VpzNVeGxQWIz67VjJHVyUlF20ekOz4kWVgsxkc8G2 saqZd6yv2EwqYTi8BDAduweP33KrQc4KDDommQNDOXxaKOeCoESIdM4p7Esdjq1o L0oixF12Cg== =pIeS - -----END PGP PUBLIC KEY BLOCK----- <p>-----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv iQEVAwUBN8ogGney5gA9JdPZAQGYTggAkropbyQJN3dFi4EZZoyaQxNgzNorCTaS 5aqZFKZNelcl1lUtNpjwfIhHGDjsbScBBpoVa2entvGiyytQphu6S89YBTEtHRiy fp+DICgHqO90LtSMxVXU9rYsuXqneAtdBLXjzOkN49asS/nYWoZO4TQiWotGASTF SxEW9evQgWgfD2dEMI2LPzoc/ygK81P2e5ezzBuiOTxTpkjkfYPsRlFOMZX93Thr 68xYtaB0PhOA3NVf+BDSDZNIVnaPN3yfaLqP6KRfZ5q0uRNudereeNpRfbtv6pwD zDyuZvcG986Chybd67NpvUs36osTVp8ugs2MyGl/s/833W7umh5ulA== =ruO5 -----END PGP SIGNATURE-----

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