From ciac@rumpole.llnl.gov Fri Dec 17 16:22:35 1999 From: CIAC Mail User Resent-From: mea culpa To: ciac-bulletin@rumpole.llnl.gov Resent-To: jericho@attrition.org Date: Tue, 14 Dec 1999 16:05:54 -0800 (PST) Subject: CIAC Bulletin K-010: Solaris Snoop Buffer Overflow Vulnerability [ For Public Release ] -----BEGIN PGP SIGNED MESSAGE----- _______________________________________________________________________________ IMPORTANT ANNOUNCEMENT - PLEASE READ In an effort to facilitate the dissemination of time-critical computer security information, CIAC will be changing the distribution process for Advisory Notices and Information Bulletins. Effective December 15, 1999, the e-mail message you receive from CIAC will contain a description of the problem, and the URL of the Advisory Notice or Information Bulletin on the CIAC web page, allowing you to quickly view them should you determine they are of relevance to your site. ______________________________________________________________________________ __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Solaris Snoop Buffer Overflow Vulnerability December 14, 1999 17:00 GMT Number K-010 _____________________________________________________________________________ PROBLEM: A buffer overflow vulnerability has been identified in the network utility program snoop when processing requests to the rquotad rpc service. PLATFORM: SunOS 5.7, 5.7_x86, 5.6, 5.6_x86, 5.5.1, 5.5.1_x86, 5.5_x86, 5.4, 5.4_x86, and 5.3. DAMAGE: A buffer overflow may be exploited to gain root access. SOLUTION: Apply the available patches. _____________________________________________________________________________ VULNERABILITY The risk is HIGH. Buffer overflow attacks are common and easy ASSESSMENT: to execute. _____________________________________________________________________________ [ Start SUN Security Bulletin ] Sun Microsystems, Inc. Security Bulletin Bulletin Number: #00190 Date: December 9, 1999 Cross-Ref: ISS Security Advisory, December 9, 1999 Title: snoop ____________________________________________________________________________ The information contained in this Security Bulletin is provided "AS IS." Sun makes no warranties of any kind whatsoever with respect to the information contained in this Security Bulletin. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY WARRANTY OF NON-INFRINGEMENT OR IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE HEREBY DISCLAIMED AND EXCLUDED TO THE EXTENT ALLOWED BY APPLICABLE LAW. IN NO EVENT WILL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES HOWEVER CAUSED AND REGARDLESS OF ANY THEORY OF LIABILITY ARISING OUT OF THE USE OF OR INABILITY TO USE THE INFORMATION CONTAINED IN THIS SECURITY BULLETIN, EVEN IF SUN MICROSYSTEMS, INC. HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. If any of the above provisions are held to be in violation of applicable law, void, or unenforceable in any jurisdiction, then such provisions are waived to the extent necessary for this disclaimer to be otherwise enforceable in such jurisdiction. ____________________________________________________________________________ 1. Bulletins Topics Sun announces the release of patches for Solaris(tm) 7, 2.6, 2.5.1, 2.5, 2.4, and 2.3 (SunOS(tm) 5.7, 5.6, 5.5.1, 5.5, 5.4 and 5.3), which relate to a vulnerability with snoop. Sun recommends that you install the patches listed in section 4 immediately on systems running SunOS 5.7, 5.6, 5.5.1, 5.5, 5.4, and 5.3. 2. Who is Affected Vulnerable: SunOS 5.7, 5.7_x86, 5.6, 5.6_x86, 5.5.1, 5.5.1_x86, 5.5, 5.5_x86, 5.4, 5.4_x86, and 5.3. Not vulnerable: All other supported versions of SunOS. 3. Understanding the Vulnerability The snoop program captures packets from the network and displays their contents. A buffer overflow vulnerability has been discovered which may be exploited by a remote attacker to execute arbitrary instructions and gain root access. The buffer overflow occurs when snoop analyzes certain types of large requests to the rquotad rpc service. 4. List of Patches The following patches are available in relation to the above problem. OS Version Patch ID __________ _________ SunOS 5.7 108482-01 SunOS 5.7_x86 108483-01 SunOS 5.6 108492-01 SunOS 5.6_x86 108493-01 SunOS 5.5.1 104960-02 SunOS 5.5.1_x86 104961-02 SunOS 5.5 108501-01 SunOS 5.5_x86 108502-01 SunOS 5.4 108490-01 SunOS 5.4_x86 108491-01 SunOS 5.3 108489-01 _____________________________________________________________________________ Sun acknowledges, with thanks, Internet Security Systems (ISS) for bringing this vulnerability to our attention. _____________________________________________________________________________ APPENDICES A. Patches listed in this bulletin are available to all Sun customers at: http://sunsolve.sun.com/pub-cgi/show.pl?target=patches/patch-license&na http://sunsolve.sun.com/pub-cgi/show.pl?target=patches/patch-license&nav=pub - -patches B. Checksums for the patches listed in this bulletin are available at: ftp://sunsolve.sun.com/pub/patches/CHECKSUMS C. 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LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) J-072: IBM AIX Buffer Overflow Vulnerability K-001: Four Vulnerabilities in the Common Desktop Environment K-002: Microsoft IE 5 Vulnerability - "download behavior" K-003: Windows NT 4.0 does not delete Unattended Installation File K-004: Microsoft "Excel SYLK" Vulnerability K-005: Microsoft "Virtual Machine Verifier" Vulnerability K-006: Microsoft - Improve TCP Initial Sequence Number Randomness K-007: Multiple Vulnerabilities in BIND K-008: ExploreZip (packed) Worm K-009: Qpopper Buffer Overflow Vulnerability -----BEGIN PGP SIGNATURE----- Version: 4.0 Business Edition iQCVAwUBOFbW77nzJzdsy3QZAQHklAQAg4hqUNC4uUr1y3pawi/jjpAorWd9RFd/ +Zlxq/uytCZTNphyXTb+hnGeUbEfxGJex8bt0jHpluKPBmXkXmkO/FW1UCwSWAVB PqxZ9AER/Jy+VIdkd52Y6r+bLZSHs2otkro+e2NazqgNuNe6pf+cIhxm94sMFS6j JXk25tmcD7s= =4Upk -----END PGP SIGNATURE-----