USN-220-1: w3c-libwww vulnerability

Publication date

1 December 2005

Overview

w3c-libwww vulnerability


Details

Sam Varshavchik discovered several buffer overflows in the
HTBoundary_put_block() function. By sending specially crafted HTTP
multipart/byteranges MIME messages, a malicious HTTP server could
trigger an out of bounds memory access in the libwww library, which
causes the program that uses the library to crash.

Sam Varshavchik discovered several buffer overflows in the
HTBoundary_put_block() function. By sending specially crafted HTTP
multipart/byteranges MIME messages, a malicious HTTP server could
trigger an out of bounds memory access in the libwww library, which
causes the program that uses the library to crash.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
5.10 breezy libwww0 – 
5.04 hoary libwww0 – 
4.10 warty libwww0 – 

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


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