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SuSE: Util < 2.10f Critical: Input Validation Risk Leading to Root Access

The mount/umount command doesn't do proper bounds checking on user input.. -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: util < 2.10f Date: Thu Feb 10 20:03:43 CET 2000 Affected SuSE versions: all Vulnerability Type: (unlikely) local root compromise SuSE default package: yes Other affected systems: all linux systems using util < 2.10f ______________________________________________________________________________ A security hole was discovered in the package mentioned above. Please update it 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 we provide this information on an "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 The mount/umount command doesn't do proper bounds checking on user input. 2. Impact If an attacker executes mount/umount with a long relative pathname, it will overwrite dynamic allocated memory of the realpath function. It is possible that an attacker could gain root privileges by modifying the heap data, however we were not able to exploit it. 3. Solution Update the package from our FTP server or remove the suid bits. ______________________________________________________________________________ Please verify these md5 checksums of the updates before installing: (For SuSE 6.0, please use the 6.1 updates) 8fffa6e7ce36b51f190652189629a2c0 /6.1/a1/util-2.10f-4.alpha.rpm 121bf103d58cc9e959f910a0437285bd /6.3/a1/util-2.10f-0.alpha.rpm 96166ddbe17ef1aabf6531a34e48d386 285c0d41b2932b068fdac3f860e3446e /6.2/a1/util-2.10f-4.i386.rpm 452143c94bcae39ec9adc5922be9acc9 ______________________________________________________________________________ You can find updates on our ftp-Server: for Intel processors for Alpha processors or try the following web pages for a list of mirrors: SUSE – Open-Source-Lösungen für Enterprise Server und Cloud | SUSE Our webpage for patches: SUSE – Open-Source-Lösungen für Enterprise Server und Cloud | SUSE Our webpage for security announcements: SUSE – Open-Source-Lösungen für Enterprise Server und Cloud | SUSE If you want to report vulnerabilities, please contact This email address is being protected from spambots. You need JavaScript enabled to view it. ______________________________________________________________________________ SuSE has got two free security mailing list services to which any interested party may subscribe: This email address is being protected from spambots. You need JavaScript enabled to view it. - moderated and for general/linux/SuSE security discussions. All SuSE security announcements are sent to this list. This email address is being protected from spambots. You need JavaScript enabled to view it. - SuSE's announce-only mailing list. Only SuSE's security annoucements are sent to this list. To subscribe to the list, send a message to: To remove your address from the list, send a message to: Send mail to the following for info and FAQ for this list: _____________________________________________________________________________ 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 - ------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----- -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv iQEVAwUBOKM1+ney5gA9JdPZAQGAJAgAnX7rqJwG9/PVSaextxIcoV33tZMAVq11 xMCUYWk6iF2fBA+cVNbG0LwwGRP0bd7NzzJxLyfNZ/WgLNLh0hHa9sE7Gg8XLc33 +S7C75ec+lFX2TOpalmdCM2BrgQFpXNLE0mY52D7l4SO63U3bAjFbMHpDQQFPSwJ 8g66zH3owVSppv792ASqc41k5s6nemd99tb7I3jL1XBUk9cdKUYzPUxaY5bdLCzp DLrUYozppU2qNork9T+iCz9ZFLiEZNjrZirqfcaemWnySAvPJIsO9wbyNfIsC2oS gwZe6QrtZHGO5Wx0db/ZLECpPXx3B0Vt5KSTk+gW53SJAV8M9hN57g==e00I -----END PGP SIGNATURE----- . A vital update has been issued for the Fedora tools suite, addressing a significant flaw that could allow local users to gain admin privileges as a result of inadequate bounds checking.. SuSE Util Package Update, Root Access Security Fix, Input Validation Critical Issue. . Severity: Critical. LinuxSecurity.com Team

Feb 10, 2000 •Critical SuSE