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Vulnerability Assessment & Network Security Forums |
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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery. Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200609-13] gzip: Multiple vulnerabilities Vulnerability Assessment Details
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[GLSA-200609-13] gzip: Multiple vulnerabilities |
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gzip: Multiple vulnerabilities Detailed Explanation for this Vulnerability Assessment The remote host is affected by the vulnerability described in GLSA-200609-13 (gzip: Multiple vulnerabilities) Tavis Ormandy of the Google Security Team has reported multiple vulnerabilities in gzip. A stack buffer modification vulnerability was discovered in the LZH decompression code, where a pathological data stream may result in the modification of stack data such as frame pointer, return address or saved registers. A static buffer underflow was discovered in the pack decompression support, permiting a specially crafted pack archive to underflow a .bss buffer. A static buffer overflow was uncovered in the LZH decompression code, permiting a data stream consisting of pathological huffman codes to overflow a .bss buffer. Multiple infinite loops were also uncovered in the LZH decompression code. Impact A remote attacker may create a specially crafted gzip archive, which when decompressed by a user or automated system exectues arbitrary code with the rights of the user id invoking gzip. The infinite loops may be abused by a possible hacker to disrupt any automated systems invoking gzip to handle data decompression. Workaround There is no known workaround at this time. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4334 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4335 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4336 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4337 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4338 Solution: All gzip users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-arch/gzip-1.3.5-r9" Network Security Threat Level: Medium Networks Security ID: Vulnerability Assessment Copyright: (C) 2006 Michel Arboi |
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