{"vuid":"VU#188507","idnumber":"188507","name":"Low BandWidth X proxy vulnerable to buffer overflow via crafted display command line option","keywords":["Sun Solaris","lbxproxy","buffer overflow","display command line option"],"overview":"A locally exploitable buffer overflow exists in the Low BandWidth X proxy.","clean_desc":"The Low BandWidth X proxy is a component of XFree86 (a freely redistributable open-source implementation of the X Window System). The Low BandWidth X proxy allows applications to transparently take advantage of the Low Bandwidth extension to X (LBX). LBX allows one to make more efficient use of low bandwidth high latency communication links. Quoting from LBX technical specifications: Low Bandwidth X (LBX) is a network-transparent protocol for running X Window System applications over transport channels whose bandwidth and latency are significantly worse than that used in local area networks. It combines a variety of caching and reencoding techniques to reduce the volume of data that must be sent over the wire. It can be used with existing clients by placing a proxy between the clients and server, so that the low bandwidth/high latency communication occurs between the proxy and server. The vulnerability manifests itself in the following function: lbxproxy/di/wire.c:ConnectToServer","impact":"A local attacker can execute arbitrary code with root privileges.","resolution":"Apply a vendor patch.","workarounds":"","sysaffected":"","thanks":"The CERT/CC thanks Sun Microsystems for reporting this vulnerability to us.","author":"This document was written by Ian A. Finlay.","public":["http://www.eSecurityOnline.com/advisories/eSO3761.asp","http://www.xfree86.org/4.2.0/lbxproxy.1.html","http://lpo.fri.uni-lj.si/doc_link/en_US/a_doc_lib/x11/specs/lbx.htm","http://www.securityfocus.com/bid/4633"],"cveids":["CVE-2002-0090"],"certadvisory":"","uscerttechnicalalert":null,"datecreated":"2002-03-21T20:55:10Z","publicdate":"2001-07-05T00:00:00Z","datefirstpublished":"2002-08-19T13:47:41Z","dateupdated":"2002-08-19T19:22:51Z","revision":37,"vrda_d1_directreport":"","vrda_d1_population":"","vrda_d1_impact":"","cam_widelyknown":"15","cam_exploitation":"0","cam_internetinfrastructure":"5","cam_population":"5","cam_impact":"20","cam_easeofexploitation":"20","cam_attackeraccessrequired":"10","cam_scorecurrent":"7.5","cam_scorecurrentwidelyknown":"9.375","cam_scorecurrentwidelyknownexploited":"16.875","ipprotocol":"","cvss_accessvector":"","cvss_accesscomplexity":"","cvss_authentication":null,"cvss_confidentialityimpact":"","cvss_integrityimpact":"","cvss_availabilityimpact":"","cvss_exploitablity":null,"cvss_remediationlevel":"","cvss_reportconfidence":"","cvss_collateraldamagepotential":"","cvss_targetdistribution":"","cvss_securityrequirementscr":"","cvss_securityrequirementsir":"","cvss_securityrequirementsar":"","cvss_basescore":"","cvss_basevector":"","cvss_temporalscore":"","cvss_environmentalscore":"","cvss_environmentalvector":"","metric":7.5,"vulnote":null}