-----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN HP-UX sendmail Patches Vulnerability Update to sendmail in Bulletin H-29 May 1, 1997 22:00 GMT Number H-29a ______________________________________________________________________________ PROBLEM: In recent months, public domain sendmail developments have uncovered several security vulnerabilities. PLATFORM: HP-UX 9 and 10 with sendmail 8.7.5 or earlier. DAMAGE: Allows unauthorized file access possibly gaining root privilege. SOLUTION: Apply patches as indicated below. ______________________________________________________________________________ VULNERABILITY Exploit details involving this vulnerability have been made ASSESSMENT: publicly available. ______________________________________________________________________________ This bulletin updates H-29by adding patch information from Hewlett-Packard. It also corrects the problems noted in G-43 bringing all HP-UX versions to sendmail 8.7.6 revision. HP feels comfortable (see below) with this version though it does not address problems mentioned in H-11. [ Start Hewlett-Packard Advisory ] Document ID: HPSBUX9704-059 Date Loaded: 970430 Title: Sendmail patches for HP-UX releases 9.X thru 10.20 - ------------------------------------------------------------------------- HEWLETT-PACKARD SECURITY BULLETIN: #00059, 30 April 1997 - ------------------------------------------------------------------------- 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: Sendmail vulnerabilities in HP-UX releases PLATFORM: HP 9000 Series 700/800s running versions of HP-UX 9.X & 10.X DAMAGE: Allows unauthorized file access. SOLUTION: Apply the appropriate patch: PHNE_10116 on all platforms with HPUX releases 9.X, running sendmail version 5.65; PHNE_10090 on all platforms with HPUX releases 10.0, 10.01, 10.10 running sendmail vers. 5.65; PHNE_9624 on all platforms with HPUX release 10.20, running sendmail version 8.7.1.1. AVAILABILITY: All patches are available now. - ------------------------------------------------------------------------- I. A. Background This bulletin addresses CERT advisories CA-95.05, CA-96.20, and CA-96.24. In recent months, public domain sendmail developments have uncovered several security vulnerabilities. Hewlett-Packard has added the required fixes into our current sendmail releases. Prior to the new patches associated with this bulletin, Hewlett-Packard provided the following versions of sendmail: HP-UX 9.X through HP-UX 10.10 : sendmail 5.65 HP-UX 10.20 (as shipped) : sendmail 8.7.1.1 HP-UX 10.20 + PHNE_8702 : sendmail 8.7.5 The sendmail program is located in (/usr/{sbin,lib}/sendmail), i.e., /usr/sbin/sendmail or /usr/lib/sendmail, depending on your system). B. Hewlett-Packard continues to patch the 5.65 version of sendmail on those releases with which it originally shipped (all pre-10.20 HP-UX). Similarly, the HP-UX release 10.20 started shipping sendmail 8.7.1.1; a companion patch PHNE_8702 brought the sendmail program to release level 8.7.5 functionality. Applying the 10.20 patch associated with this security bulletin will upgrade sendmail to version 8.7.6. This sendmail release has been found to be stable and is a patch level with which Hewlett-Packard currently feels comfortable. The remaining patches associated with this bulletin provide a patched version of sendmail 5.65. C. Recommended solution Apply the patches appropriate to your system release level. D. Impact of the patch Applying the 10.20 patch associated with this security bulletin will upgrade sendmail /usr/sbin/sendmail binary to version 8.7.6. This sendmail release has been found to be stable and is a patch level with which Hewlett-Packard currently feels comfortable. The remaining patches associated with this bulletin provide a patched version of sendmail 5.65. E. 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You might want to verify that your email address is correct as displayed on the screen. From this screen, you may also view/subscribe to the digests, including the security bulletins digest. To get a patch matrix of current HP-UX and BLS security patches referenced by either Security Bulletin or Platform/OS, click on following screens in order: Technical Knowledge Database Browse Security Bulletins Security Bulletins Archive HP-UX Security Patch Matrix F. 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. 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HP is not liable for any misuse of this information by any third party. _______________________________________________________________________ - -----End of Document ID: HPSBUX9704-059-------------------------------------- [ End Hewlett-Packard Advisory ] ______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Hewlett-Packard for the information contained in this bulletin. ______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. 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World Wide Web: http://ciac.llnl.gov/ Anonymous FTP: ciac.llnl.gov (128.115.19.53) Modem access: +1 (510) 423-4753 (28.8K baud) +1 (510) 423-3331 (28.8K baud) CIAC has several self-subscribing mailing lists for electronic publications: 1. CIAC-BULLETIN for Advisories, highest priority - time critical information and Bulletins, important computer security information; 2. CIAC-NOTES for Notes, a collection of computer security articles; 3. SPI-ANNOUNCE for official news about Security Profile Inspector (SPI) software updates, new features, distribution and availability; 4. SPI-NOTES, for discussion of problems and solutions regarding the use of SPI products. Our mailing lists are managed by a public domain software package called Majordomo, which ignores E-mail header subject lines. 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