-----BEGIN PGP SIGNED MESSAGE----- Internet Security Systems Security Advisory November 20, 2001 Remote Logic Flaw Vulnerability in HP-UX Line Printer Daemon Synopsis: Internet Security Systems (ISS) X-Force has discovered a vulnerability in the HP-UX line printer daemon (rlpdaemon). This vulnerability may allow a remote or local attacker to execute arbitrary code with superuser privilege. Affected Versions: HP-UX 10.01 HP-UX 10.10 HP-UX 10.20 HP-UX 11.00 HP-UX 11.11 Description: The line printer daemon allows printer sharing over a network of Unix computers. HP-UX is shipped with a line printer daemon adapted from BSD Unix. The HP line printer daemon is similar to "in.lpd" in other Unix variants. A vulnerability exists in rlpdaemon that may allow remote attackers to send specially-crafted print requests, which can be used to create arbitrary files or directories on the target system. Given the ability to write to arbitrary files, remote attackers may gain access to the target system. The rlpdaemon daemon is enabled by default and executed with superuser privilege. This vulnerability can be successfully exploited with no local account or specific knowledge of the target system’s configuration. Recommendations: ISS X-Force recommends that all system administrators who have not implemented network printing should immediately disable rlpdaemon and any other unused services. HP will make the following patches available to address the vulnerability described in this advisory: HP-UX 10.01 PHCO_25107 HP-UX 10.10 PHCO_25108 HP-UX 10.20 PHCO_25109 HP-UX 11.00 PHCO_25110 HP-UX 11.11 PHCO_25111 To access these patches when they become available, visit: http://itrc.hp.com ISS X-Force will provide detection and assessment support for these vulnerabilities in upcoming X-Press Updates for RealSecure Network Sensor and Internet Scanner. Additional Information: The Common Vulnerabilities and Exposures (CVE) project has assigned the name CAN-2001-0817 to this issue. This is a candidate for inclusion in the CVE list http://cve.mitre.org, which standardizes names for security problems. HP Security Bulletin #00176, http://itrc.hp.com ISS X-Force Database, http://xforce.iss.net/static/7234.php Credits: This vulnerability was discovered and researched by Mark Dowd and Kris Hunt of Internet Security Systems. ISS would like to thank HP for their response and handling of this vulnerability. ______ About Internet Security Systems (ISS) Internet Security Systems is a leading global provider of security management solutions for the Internet, protecting digital assets and ensuring safe and uninterrupted e-business. With its industry-leading intrusion detection and vulnerability assessment, remote managed security services, and strategic consulting and education offerings, ISS is a trusted security provider to more than 8,000 customers worldwide including 21 of the 25 largest U.S. commercial banks and the top 10 U.S. telecommunications companies. Founded in 1994, ISS is headquartered in Atlanta, GA, with additional offices throughout North America and international operations in Asia, Australia, Europe, Latin America and the Middle East. For more information, visit the Internet Security Systems web site at www.iss.net or call 888-901-7477. Copyright (c) 2001 Internet Security Systems, Inc. All rights reserved worldwide. Permission is hereby granted for the redistribution of this Alert electronically. It is not to be edited in any way without express consent of the X-Force. If you wish to reprint the whole or any part of this Alert in any other medium excluding electronic medium, please e-mail xforceat_private for permission. Disclaimer The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties with regard to this information. In no event shall the author be liable for any damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk. X-Force PGP Key available at: http://xforce.iss.net/sensitive.php as well as on MIT's PGP key server and PGP.com's key server. Please send suggestions, updates, and comments to: X-Force xforceat_private of Internet Security Systems, Inc. X-Force Vulnerability and Threat Database: http://www.iss.net/xforce Please send suggestions, updates, and comments to: X-Force xforceat_private of Internet Security Systems, Inc. -----BEGIN PGP SIGNATURE----- Version: 2.6.3a Charset: noconv iQCVAwUBO/qvGTRfJiV99eG9AQE3lwP8DE+6ppVADs1ACy9S9mJAOoCk0s6izYJz SjhMcc8sWyRGJV0I4rFzwMtoY5EC6mEkFLO8i2gLIx6GqYqV/pGd7ym9AYklNAhj Xrlq4dspooSacE8zrV2YLZYytYpH5YtPindE5AMklzVEbHagraAbdrEuBF2YzUhd 5jufnNyY6c0= =SDJa -----END PGP SIGNATURE-----
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