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USN-4001-2: libseccomp vulnerability

30 May 2019

libseccomp could allow unintended access to system calls.

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Releases

Packages

  • libseccomp - library for working with the Linux seccomp filter

Details

USN-4001-1 fixed a vulnerability in libseccomp. This update provides the
corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Jann Horn discovered that libseccomp did not correctly generate 64-bit
syscall argument comparisons with arithmetic operators (LT, GT, LE, GE).
An attacker could use this to bypass intended access restrictions for
argument-filtered system calls.

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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 14.04

This update uses a new upstream release which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References

Related notices

  • USN-4001-1: seccomp, libseccomp, libseccomp2, python3-seccomp, python-seccomp, libseccomp-dev

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Further reading