Published:
29 April 1998
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-98.063 -- Hewlett-Packard Security Bulletin: #00078 Security Vulnerability in Openmail on HP-UX 30 April 1998 =========================================================================== Hewlett-Packard has released the following advisory concerning an OpenMail server misconfiguration that can give users the ability to run arbitrary shell commands. This applies to all currently supported OpenMail versions (B.05.01 (GR4) and B.05.10 (GR5), as well as the earlier B.04.01 (GR3) revision. The following security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write this document, AUSCERT has had no control over its content. As such, the decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It will not be updated when the original bulletin is. If downloading at a later date, it is recommended that the bulletin is retrieved from the original authors to ensure that the information is still current. Contact information for HP is included in the Security Bulletin below. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AUSCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: auscert@auscert.org.au Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AUSCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for emergencies. Facsimile: (07) 3365 7031 - ---------------------------BEGIN INCLUDED TEXT-------------------- - ------------------------------------------------------------------------- HEWLETT-PACKARD SECURITY ADVISORY: #00078, 29 April 1998 - ------------------------------------------------------------------------- The information in the following Security Advisory should be acted upon as soon as possible. Hewlett-Packard Company will not be liable for any consequences to any customer resulting from customer's failure to fully implement instructions in this Security Advisory as soon as possible. - ------------------------------------------------------------------------- PROBLEM: Insecure configuration of any version of OpenMail. PLATFORM: Any HP 9000 series 700/800 systems running OpenMail. DAMAGE: Users can run arbitrary shell commands. SOLUTION: Reconfigure OpenMail per the OpenMail Technical Guide. AVAILABILITY: N/A - ------------------------------------------------------------------------- I. A. Background Hewlett-Packard has learned of an OpenMail server misconfiguration that can give users the ability to run arbitrary shell commands. This applies to all currently supported OpenMail versions (B.05.01 (GR4) and B.05.10 (GR5), as well as the earlier B.04.01 (GR3) revision. B. Fixing the problem Ref: [OpenMail Technical Guide, pages 3-366, and 3-369] Hewlett-Packard notes that this issue has already been adequately addressed in OpenMail. There is a general parameter setting (UAL_PRINT_SERVER_ONLY) in the general.cfg file, that, if set to TRUE, forces all server printing to go through OpenMail's print server. The general customization file general.cfg is located in /var/opt/openmail/sys, as is the print server's configuration file print.cfg. On the client all that is necessary is to then change the 'Printer Server Command' to point to one of the configured printers. OpenMail's print server uses a configuration file to configure available printers, and validates each print request against its configured printers. Any print requests that do not match the required syntax will not be executed. More information about OpenMail's print server and how to configure it can be found in the OpenMail Technical Guide (pages 3-366 to 3-369 for the GR5 edition) C. To subscribe to automatically receive future NEW HP Security Advisories and Bulletins from the HP Electronic Support Center via electronic mail, do the following: User your browser to get to the HP Electronic Support Center page at: http://us-support.external.hp.com (for US, Canada, Asia-Pacific, & Latin-America) http://europe-support.external.hp.com (for Europe) Login with your user ID and password, or register for one (remember to save the User ID assigned to you, and your password). Once you are on the Main Menu, Click on the Technical Knowledge Database, and it will connect to a HP Search Technical Knowledge DB page. Near the bottom is a hyperlink to our Security Bulletin archive. Once in the archive there is another link to our current security patch matrix. Updated daily, this matrix is categorized by platform/OS release, and by bulletin topic. D. To report new security vulnerabilities, send email to security-alert@hp.com Please encrypt any 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 security-alert@hp.com. Permission is granted for copying and circulating this Advisory 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. ________________________________________________________________________ - -----End of Document ID: HPSBUX9804-078-------------------------------------- - --------------------------END INCLUDED TEXT----------------------- -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBNU7WqSh9+71yA2DNAQGcpgP/bCsxYRTU98nD2JIi86DOTkFfmi/eR82Q 45ZdopSjdR+H5OY9NUqKrMnxvE7aaU4Co15JgsyKEG5++8KRCkadjEGrnnjQUL4l LY9BFQBp+nhFl1e6phq720hzDn8fQEQYJFoIuUuWWrxzO1cixQ/ODqFNqgt7YUWR uMdEJ/BHETA= =6aOB -----END PGP SIGNATURE-----