#VU54308 Release of invalid pointer or reference in libslirp - CVE-2021-3592
Published: June 22, 2021
Vulnerability identifier: #VU54308
Vulnerability risk: Low
CVSSv4.0: 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
CVE-ID: CVE-2021-3592
CWE-ID: CWE-763
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
libslirp
libslirp
Software vendor:
Freedesktop.org
Freedesktop.org
Description
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 updates from vendor's website.