SB20200930102 - Red Hat Enterprise Linux 7 update for qemu-kvm

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Main Vulnerability Database SB20200930102

SB20200930102 - Red Hat Enterprise Linux 7 update for qemu-kvm

Published: September 30, 2020

Security Bulletin ID SB20200930102
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2020-1983)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error when processing packets within the ip_reass() function in ip_input.c in libslirp. A remote attacker can send a specially crafted packet to the application, trigger a use-after-free error and crash it.


2) Out-of-bounds write (CVE-ID: CVE-2020-14364)

The vulnerability allows a remote user to compromise vulnerable system.

The vulnerability exists due to a boundary error within the USB emulator in QEMU. A remote user with access to guest operating system on the guest operating system can send specially crafted USB packets, trigger out-of-bounds write and execute arbitrary code on the host system.


Remediation

Install update from vendor's website.

References