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Ubuntu 16.04 LTS USN-4574-1: Critical libseccomp-golang Bypass Risk

ubuntu
Calendar Grey October 7, 2020
Dist Ubuntu Esm H88
The Ubuntu Security Notice USN-4574-2 addresses a critical vulnerability in libseccomp-golang, which jeopardizes the integrity of system hardening protocols.
A system hardening measure could be bypassed.

Summary

A system hardening measure could be bypassed.

Software Description:

- golang-github-seccomp-libseccomp-golang: a Go-based interface to the libseccomp library

Details:

It was discovered that libseccomp-golang did not properly generate BPFs. If

a process were running under a restrictive seccomp filter that specified

multiple syscall arguments, the application could potentially bypass the

intended restrictions put in place by seccomp.

Topics%20covered

Topics Covered

security advisory system hardening ubuntu bypass golang libseccomp

Update Instructions

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

Ubuntu 16.04 LTS:
  golang-github-seccomp-libseccomp-golang-dev  0.0~git20150813.0.1b506fc-2+deb9u1build0.16.04.1

After a standard system update anything that depends on libseccomp-golang needs
to be rebuilt to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4574-1

CVE-2017-18367

Severity
critical
Lowest
Low
Medium
High
Critical

October 07, 2020

Topics%20covered

Topics Covered

security advisory system hardening ubuntu bypass golang libseccomp

Package Information

https://launchpad.net/ubuntu/+source/golang-github-seccomp-libseccomp-golang/0.0~git20150813.0.1b506fc-2+deb9u1build0.16.04.1

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