USN-383-1: libpng vulnerability

17 November 2006

libpng vulnerability

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Releases

Details

Tavis Ormandy discovered that libpng did not correctly calculate the
size of sPLT structures when reading an image. By tricking a user or an
automated system into processing a specially crafted PNG file, an
attacker could exploit this weakness to crash the application using the
library.

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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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Update instructions

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

Ubuntu 6.10
  • libpng12-0 - 1.2.8rel-5.1ubuntu0.1
Ubuntu 6.06
  • libpng12-0 - 1.2.8rel-5ubuntu0.1
Ubuntu 5.10
  • libpng10-0 - 1.0.18-1ubuntu3.1

After a standard system upgrade you need to reboot your computer to
effect the necessary changes.

References

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Further reading