SB2021072830 - SUSE update for qemu

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2021072830

SB2021072830 - SUSE update for qemu

Published: July 28, 2021

Security Bulletin ID SB2021072830
CSH 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 vulnerabilities.


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

CWE-ID: CWE-763 - Release of invalid pointer or reference

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-763 - Release of invalid pointer or reference

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-763 - Release of invalid pointer or reference

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-763 - Release of invalid pointer or reference

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


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