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Red Hat: RHSA-2020-0775-01 Important: QEMU-KVM Heap Buffer Overflow

red hat
Calendar Grey March 10, 2020
Dist Redhat Esm H88
Canonical releases a security patch for libvirt, tackling severe vulnerabilities, including improper input validation. Update immediately.
An update for qemu-kvm is now available for Red Hat Enterprise Linux 6

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

After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.

Summary

Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM.
Security Fix(es):
* QEMU: slirp: heap buffer overflow during packet reassembly (CVE-2019-14378)
* QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu() (CVE-2020-7039)
* QEMU: Slirp: use-after-free during packet reassembly (CVE-2019-15890)
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.

Topics%20covered

Topics Covered

security advisory Red Hat security fix important network issue heap buffer overflow qemu-kvm

References

https://access.redhat.com/security/cve/CVE-2019-14378 https://access.redhat.com/security/cve/CVE-2019-15890 https://access.redhat.com/security/cve/CVE-2020-7039 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: qemu-kvm-0.12.1.2-2.506.el6_10.6.src.rpm
i386: qemu-guest-agent-0.12.1.2-2.506.el6_10.6.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.6.i686.rpm
x86_64: qemu-guest-agent-0.12.1.2-2.506.el6_10.6.x86_64.rpm qemu-img-0.12.1.2-2.506.el6_10.6.x86_64.rpm qemu-kvm-0.12.1.2-2.506.el6_10.6.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.6.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.506.el6_10.6.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: qemu-kvm-0.12.1.2-2.506.el6_10.6.src.rpm
x86_64: qemu-guest-agent-0.12.1.2-2.506.el6_10.6.x86_64.rpm qemu-img-0.12.1.2-2.506.el6_10.6.x86_64.rpm qemu-kvm-0.12.1.2-2.506.el6_10.6.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.6.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.506.el6_10.6.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: qemu-kvm-0.12.1.2-2.506.el6_10.6.src.rpm
i386: qemu-guest-agent-0.12.1.2-2.506.el6_10.6.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.6.i686.rpm
ppc64: qemu-guest-agent-0.12.1.2-2.506.el6_10.6.ppc64.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.6.ppc64.rpm
x86_64: qemu-guest-agent-0.12.1.2-2.506.el6_10.6.x86_64.rpm qemu-img-0.12.1.2-2.506.el6_10.6.x86_64.rpm qemu-kvm-0.12.1.2-2.506.el6_10.6.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:0775-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0775
Issue date: 2020-03-10

Topic

An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat security fix important network issue heap buffer overflow qemu-kvm

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

1734745 - CVE-2019-14378 QEMU: slirp: heap buffer overflow during packet reassembly

1749716 - CVE-2019-15890 QEMU: Slirp: use-after-free during packet reassembly

1791551 - CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()

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