SB2021072178 - SUSE update for qemu 

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Main Vulnerability Database SB2021072178

SB2021072178 - SUSE update for qemu

Published: July 21, 2021

Security Bulletin ID SB2021072178
Severity
Medium
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 20% Low 80%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Release of invalid pointer or reference (CVE-ID: CVE-2021-3592)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to invalid pointer initialization within the bootp_input() function while processing UDP packets in the SLiRP networking implementation of QEMU. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host.


2) Release of invalid pointer or reference (CVE-ID: CVE-2021-3593)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to invalid pointer initialization within the udp6_input() function while processing UDP packets in the SLiRP networking implementation of QEMU. A malicious guest could use this vulnerability to read host memory.


3) Release of invalid pointer or reference (CVE-ID: CVE-2021-3594)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to invalid pointer initialization within the udp_input() function while processing UDP packets in the SLiRP networking implementation of QEMU. A malicious guest could use this vulnerability to read host memory.

4) Release of invalid pointer or reference (CVE-ID: CVE-2021-3595)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to invalid pointer initialization within the tftp_input() function while processing UDP packets in the SLiRP networking implementation of QEMU. A malicious guest could use this vulnerability to read host memory.

5) Out-of-bounds write (CVE-ID: CVE-2021-3611)

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

The vulnerability exists due to a boundary error in the Intel HD Audio device (intel-hda) of QEMU. A remote user of the guest OS trigger an out-of-bounds write and crash the QEMU process on the host.


Remediation

Install update from vendor's website.

References