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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 >> Debian Local Security Checks >> [DSA1020] DSA-1020-1 flex Vulnerability Assessment Details
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[DSA1020] DSA-1020-1 flex |
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DSA-1020-1 flex Detailed Explanation for this Vulnerability Assessment Chris Moore discovered that flex, a scanner generator, generates code, which allocates insufficient memory, if the grammar contains REJECT statements or trailing context rules. This may lead to a buffer overflow and the execution of arbitrary code. If you use code, which is derived from a vulnerable lex grammar in an untrusted environment you need to regenerate your scanner with the fixed version of flex. The old stable distribution (woody) is not affected by this problem. For the stable distribution (sarge) this problem has been fixed in version 2.5.31-31sarge1. For the unstable distribution (sid) this problem has been fixed in version 2.5.33-1. We recommend that you upgrade your flex package. Solution : http://www.debian.org/security/2006/dsa-1020 Network Security Threat Level: High Networks Security ID: Vulnerability Assessment Copyright: This script is (C) 2007 Michel Arboi |
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