SB2021062220 - Multiple vulnerabilities in Freedesktop libslirp

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2021062220

SB2021062220 - Multiple vulnerabilities in Freedesktop libslirp

Published: June 22, 2021

Security Bulletin ID SB2021062220
Severity
Low
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 secuirty vulnerabilities.


1) 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.

2) 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.

3) 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.


4) 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.


Remediation

Install update from vendor's website.

References