From ciac@rumpole.llnl.gov Fri Mar 10 14:23:19 2000 From: CIAC Mail User Resent-From: mea culpa To: ciac-bulletin@rumpole.llnl.gov Resent-To: jericho@attrition.org Date: Wed, 1 Mar 2000 06:42:12 -0800 (PST) Subject: CIAC Bulletin K-023: FreeBSD - Delegate Proxy Server Vulnerability [ For Public Release ] -----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN FreeBSD - Delegate Proxy Server Vulnerability February 24, 2000 17:00 GMT Number K-023 ______________________________________________________________________________ PROBLEM: Delegate is an optional third-party protocol proxy system distributed with FreeBSD. If installed the software may allow an attacker to execute arbitrary commands on a FreeBSD system, typically as user nobody. PLATFORM: The FreeBSD ports collection before 2/2/2000. DAMAGE: A local or remote user who can connect to the delegate port(s), or malicious servers that a user accesses using the delegate proxy, can potentially execute arbitrary code on the attacked system as user nobody. SOLUTION: There are no patches available to fix this problem. Follow the FreeBSD solution for your operating system, or remove the package. ______________________________________________________________________________ VULNERABILITY The risk is low. The optional third-party software package ASSESSMENT: must be installed. ______________________________________________________________________________ http://ciac.llnl.gov/ciac/bulletins/k-023.shtml _____________________________________________________________________________ CIAC wishes to acknowledge the contributions of FreeBSD, Inc. 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. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. 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LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) K-013: Buffer Overflow in Sun Solstice AdminSuite Daemon sadmind K-014: HP-UX Aserver Vulnerability K-015: ColdFusion Information Exposure (CFCACHE Tag) K-016: Microsoft "Malformed IMAP Request" Vulnerability K-017: Microsoft "Malformed RTF Control Word" Vulnerability K-018: HP-UX - Security Vulnerability with PMTU Strategy K-019: Microsoft - "Spoofed LPC Port Request" Vulnerability K-020: Majordomo open() call Vulnerability K-021: Malicious HTML Tags Vulnerability K-022: FreeBSD - Asmon/Ascpu Vulnerability -----BEGIN PGP SIGNATURE----- Version: 4.0 Business Edition iQCVAwUBOLbZKbnzJzdsy3QZAQFOXAQAyYzFAGN54WynqOrWBOsQLIHayfTGWTok z+rHYllr65NzWJYxsW9zH6o6PpSHFGtyL0hK3LvDfsDn3joMMzfaNamD0hTsZVvJ r+D9cZv4Jhj5n01lyhuY8sYIwcK0RbhE8ByqjDyQjuYq7NXGpa+P+mJzwORuBMxw p3d9RsKfAIo= =pI05 -----END PGP SIGNATURE-----