Xref: utgpu comp.security.misc:31789 Path: utgpu!utcsri!rutgers!news.sgi.com!sdd.hp.com!hp-pcd!hpbs2500.boi.hp.com!hpax!secure From: [log in to unmask] (Security Alert) Newsgroups: comp.security.misc Subject: Security Vulnerability in nettune executable Date: 8 Aug 1996 21:36:10 GMT Organization: Hewlett Packard Cupertino Site Lines: 111 Message-ID: <[log in to unmask]> NNTP-Posting-Host: hpcugsya.cup.hp.com X-Newsreader: TIN [version 1.2 PL0.9] ------------------------------------------------------------------------- HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX9607-035, 22 July 1996 ------------------------------------------------------------------------- The information in the following Security Bulletin should be acted upon as soon as possible. Hewlett Packard will not be liable for any consequences to any customer resulting from customer's failure to fully implement instructions in this Security Bulletin as soon as possible. ------------------------------------------------------------------------- PROBLEM: Incorrect permissions on nettune executable PLATFORM: HP 9000/700 and 9000/800 systems running operating system version 10.0 or 10.01 of HP-UX. DAMAGE: The configuration of various networking parameters could be modified by non-root users. SOLUTION: Login as root user and issue the following commands: chmod 555 /usr/contrib/bin/nettune chown bin /usr/contrib/bin/nettune AVAILABILITY: Not applicable ------------------------------------------------------------------------- I. Nettune A. Background The nettune program is a utility program that allows non-root users to examine and root users to modify several items that affect networking. The nettune binary that ships with HP-UX 10.0 and 10.01 has incorrect permission attributes that allow non-root users to modify networking parameters which only root users should be able to modify. Operating systems released after 10.01, such as HP-UX 10.10, correctly set the permissions on this program file and are therefore not vulnerable. B. Fixing the problem The fix for this problem is to modify the owner and execution permissions of the nettune binary itself. This can easily be accomplished using the chown and chmod commands listed below. C. Recommended solution Login as root user and issue the following commands: chmod 555 /usr/contrib/bin/nettune chown bin /usr/contrib/bin/nettune D. To subscribe to automatically receive future NEW HP Security Bulletins from the HP SupportLine mail service via electronic mail, send an email message to: [log in to unmask] (no Subject is required) Multiple instructions are allowed in the TEXT PORTION OF THE MESSAGE, here are some basic instructions you may want to use: To add your name to the subscription list for new security bulletins, send the following in the TEXT PORTION OF THE MESSAGE: subscribe security_info To retrieve the index of all HP Security Bulletins issued to date, send the following in the TEXT PORTION OF THE MESSAGE: send security_info_list To get a patch matrix of current HP-UX and BLS security patches referenced by either Security Bulletin or Platform/OS, put the following in the text portion of your message: send hp-ux_patch_matrix World Wide Web service for browsing of bulletins is available via our URL: (http://us.external.hp.com) Choose "Support news", then under Support news, choose "Security Bulletins" E. To report new security vulnerabilities, send email to [log in to unmask] Please encrypt exploit information using the security-alert PGP key, available from your local key server, or by sending a message with a -subject- (not body) of 'get key' (no quotes) to [log in to unmask] Permission is granted for copying and circulating this Bulletin to Hewlett-Packard (HP) customers (or the Internet community) for the purpose of alerting them to problems, if and only if, the Bulletin is not edited or changed in any way, is attributed to HP, and provided such reproduction and/or distribution is performed for non-commercial purposes. Any other use of this information is prohibited. HP is not liable for any misuse of this information by any third party. ________________________________________________________________________