{"vuid":"VU#151305","idnumber":"151305","name":"CA Brightstor ARCserve Backup fails to properly process RPC requests","keywords":["CA Brightstor ARCserve Backup","remote code execution","0xBF RPC requests","mediasvr.exe process"],"overview":"The Computer Associates BrightStor ARCserve Backup contains a buffer overflow in the handling of RPC data that may allow a remote attacker to execute arbitrary code.","clean_desc":"BrightStor ARCserve Backup is a backup and data retention tool that integrates with other BrightStor Data Availability and BrightStor Storage Management solutions. A vulnerability exists in Mediasrv.exe which is a component of BrightStor ARCserve Backup Tape Engine. The Tape Engine features allow BrightStor ARCserve Backup products to use tape drives for storage. This vulnerability may be exploited by sending a specially crafted RPC request to a vulnerable system. According to Shirkdog Security Advisory SHK-004: There seems to be an design error in the handling of RPC data with xdr procedures across several .dll's imported by Mediasvr.exe. Note that the vulnerable software may be running on any machines that have BrightStor ARCserve Backup products installed. We are aware of publicly available exploit code for this vulnerability.","impact":"A remote, unauthenticated attacker may be able to execute arbitrary code.","resolution":"Update\nBrightStor has released patches to address this issue. See BrightStor ARCserve Backup Media Server Security Notice for more details.","workarounds":"Disable mediasvr.exe Computer Associates recommends the following temporary workaround to mitigate the vulnerability: 1) Rename the \"mediasvr.exe\" file to a non-functional file name,\nsuch as \"mediasvc.exe.disable\". 2) Then restart the CA BrightStor Tape Engine service. Note that this will disable the product's command line functionality.","sysaffected":"","thanks":"This issue was publicly reported in Shirkdog Security Advisory \nSHK-004","author":"This document was written by Chris Taschner.","public":["http://secunia.com/advisories/24682/","http://supportconnectw.ca.com/public/storage/infodocs/babmedser-secnotice.asp"],"cveids":["CVE-2007-1785"],"certadvisory":"","uscerttechnicalalert":null,"datecreated":"2007-03-30T12:55:18Z","publicdate":"2007-03-29T00:00:00Z","datefirstpublished":"2007-04-02T15:19:44Z","dateupdated":"2007-05-10T14:06:37Z","revision":20,"vrda_d1_directreport":"0","vrda_d1_population":"3","vrda_d1_impact":"3","cam_widelyknown":"15","cam_exploitation":"10","cam_internetinfrastructure":"10","cam_population":"7","cam_impact":"20","cam_easeofexploitation":"15","cam_attackeraccessrequired":"20","cam_scorecurrent":"27.5625","cam_scorecurrentwidelyknown":"31.5","cam_scorecurrentwidelyknownexploited":"39.375","ipprotocol":"tcp","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":27.5625,"vulnote":null}