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Debian Security Advisory DSA 3653-1 (flex - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Alexander Sulfrian discovered a buffer overflow in the yy_get_next_buffer() function generated by Flex, which may result in denial of service and potentially the execution of code if operating on data from untrusted sources. Affected applications need to be rebuild. bogofilter will be rebuild against the updated flex in a followup update. Further affected applications should be reported at the bug referenced above.
Affected Software
Affected Software
flex on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the stable distribution (jessie), this problem has been fixed in version 2.5.39-8+deb8u1. For the testing distribution (stretch), this problem has been fixed in version 2.6.1-1. For the unstable distribution (sid), this problem has been fixed in version 2.6.1-1. We recommend that you upgrade your flex packages.