{"vuid":"VU#773548","idnumber":"773548","name":"gzip contains a .bss buffer overflow in its LZH handling","keywords":["gzip",".bss","buffer overflow","LZH support","make_table() function","apple-2006-007"],"overview":"The gzip program contains a buffer overflow vulnerability that may allow an attacker to execute arbitrary code or create a denial-of-service condition.","clean_desc":"The gzip program is used to compress and decompress archived files. Some implementations of gzip include support for the LZH compression algorithm. A buffer overflow vulnerability exists in the way gzip handles certain files compressed with the LZH algorithm. An attacker may be able to exploit this vulnerability by convincing a user to open a specially crafted gzip file. Note that the attacker could either 1) convince a user to open a malicious gzip file, or 2) save the file in a place where another program would call gzip to decompress the archive.","impact":"A remote, unauthenticated attacker may be able to execute arbitrary code or create a denial-of-service condition.","resolution":"Upgrade or apply a patch from the vendor\nThis issue has been addressed in gzip 1.3.6. See the systems affected section of this document for information about specific vendors.","workarounds":"Workarounds\nUntil updates can be applied, the following workarounds may mitigate the impact of this vulnerability: Do not decompress gzip files that are received from unknown sources. Do not execute gzip with system-level privileges. Some automated processes may rely on gzip to complete their tasks. When possible, disable such programs or do not allow them to execute gzip with root privileges.","sysaffected":"","thanks":"Thanks to Tavis Ormandy, Google Security Team for reporting this issue.","author":"This document was written by Ryan Giobbi.","public":["http://www.gzip.org/","http://www.auscert.org.au/7179"],"cveids":["CVE-2006-4337"],"certadvisory":"","uscerttechnicalalert":null,"datecreated":"2006-09-05T21:01:40Z","publicdate":"2006-06-19T00:00:00Z","datefirstpublished":"2006-09-19T20:39:14Z","dateupdated":"2011-07-22T12:43:48Z","revision":44,"vrda_d1_directreport":"1","vrda_d1_population":"4","vrda_d1_impact":"3","cam_widelyknown":"15","cam_exploitation":"3","cam_internetinfrastructure":"4","cam_population":"19","cam_impact":"10","cam_easeofexploitation":"10","cam_attackeraccessrequired":"2","cam_scorecurrent":"1.5675","cam_scorecurrentwidelyknown":"1.92375","cam_scorecurrentwidelyknownexploited":"3.135","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":1.5675,"vulnote":null}