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RedHat: RHSA-2019-3624-01 Moderate: Libseccomp Security Fix

red hat
Calendar Grey November 5, 2019
Dist Redhat Esm H88
A recent patch for libseccomp in Red Hat Enterprise Linux 8 resolves a noteworthy vulnerability associated with syscall filtering mechanisms.
An update for libseccomp is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

The libseccomp library provides an interface to the Linux Kernel's syscall filtering mechanism, seccomp. The libseccomp API allows an application to specify which system calls or system call arguments the application is allowed to execute, all of which are then enforced by the Linux Kernel.
The following packages have been upgraded to a later upstream version: libseccomp (2.4.1). (BZ#1688938)
Security Fix(es):
* libseccomp: incorrect generation of syscall filters in libseccomp (CVE-2019-9893)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory bug fix security fix Red Hat Enterprise Linux Moderate libseccomp syscall filtering

References

https://access.redhat.com/security/cve/CVE-2019-9893 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.1_release_notes/

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: libseccomp-2.4.1-1.el8.src.rpm
aarch64: libseccomp-2.4.1-1.el8.aarch64.rpm libseccomp-debuginfo-2.4.1-1.el8.aarch64.rpm libseccomp-debugsource-2.4.1-1.el8.aarch64.rpm libseccomp-devel-debuginfo-2.4.1-1.el8.aarch64.rpm
ppc64le: libseccomp-2.4.1-1.el8.ppc64le.rpm libseccomp-debuginfo-2.4.1-1.el8.ppc64le.rpm libseccomp-debugsource-2.4.1-1.el8.ppc64le.rpm libseccomp-devel-debuginfo-2.4.1-1.el8.ppc64le.rpm
s390x: libseccomp-2.4.1-1.el8.s390x.rpm libseccomp-debuginfo-2.4.1-1.el8.s390x.rpm libseccomp-debugsource-2.4.1-1.el8.s390x.rpm libseccomp-devel-debuginfo-2.4.1-1.el8.s390x.rpm
x86_64: libseccomp-2.4.1-1.el8.i686.rpm libseccomp-2.4.1-1.el8.x86_64.rpm libseccomp-debuginfo-2.4.1-1.el8.i686.rpm libseccomp-debuginfo-2.4.1-1.el8.x86_64.rpm libseccomp-debugsource-2.4.1-1.el8.i686.rpm libseccomp-debugsource-2.4.1-1.el8.x86_64.rpm libseccomp-devel-debuginfo-2.4.1-1.el8.i686.rpm libseccomp-devel-debuginfo-2.4.1-1.el8.x86_64.rpm
Red Hat CodeReady Linux Builder (v. 8):
aarch64: libseccomp-debuginfo-2.4.1-1.el8.aarch64.rpm libseccomp-debugsource-2.4.1-1.el8.aarch64.rpm libseccomp-devel-2.4.1-1.el8.aarch64.rpm libseccomp-devel-debuginfo-2.4.1-1.el8.aarch64.rpm
ppc64le:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:3624-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:3624
Issue date: 2019-11-05

Topic

An update for libseccomp is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory bug fix security fix Red Hat Enterprise Linux Moderate libseccomp syscall filtering

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1688938 - Rebase libseccomp to version 2.4

1690897 - CVE-2019-9893 libseccomp: incorrect generation of syscall filters in libseccomp

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