Executive Summary

Summary
Title libseccomp vulnerability
Informations
Name USN-4001-1 First vendor Publication 2019-05-30
Vendor Ubuntu Last vendor Modification 2019-05-30
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
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Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04 - Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS

Summary:

libseccomp could allow unintended access to system calls.

Software Description: - libseccomp: library for working with the Linux seccomp filter

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.

Update instructions:

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

Ubuntu 19.04:
libseccomp2 2.4.1-0ubuntu0.19.04.3

Ubuntu 18.10:
libseccomp2 2.4.1-0ubuntu0.18.10.3

Ubuntu 18.04 LTS:
libseccomp2 2.4.1-0ubuntu0.18.04.2

Ubuntu 16.04 LTS:
libseccomp2 2.4.1-0ubuntu0.16.04.2

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:
https://usn.ubuntu.com/usn/usn-4001-1
CVE-2019-9893

Package Information:
https://launchpad.net/ubuntu/+source/libseccomp/2.4.1-0ubuntu0.19.04.3
https://launchpad.net/ubuntu/+source/libseccomp/2.4.1-0ubuntu0.18.10.3
https://launchpad.net/ubuntu/+source/libseccomp/2.4.1-0ubuntu0.18.04.2
https://launchpad.net/ubuntu/+source/libseccomp/2.4.1-0ubuntu0.16.04.2

Original Source

Url : http://www.ubuntu.com/usn/USN-4001-1

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Alert History

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0
1
Date Informations
2019-05-31 05:21:44
  • Multiple Updates
2019-05-31 05:18:52
  • First insertion