Release of invalid pointer or reference in libslirp - CVE-2021-3594

Vulnerability identifier: #VU54310

CSH Severity: Low

CVSS v4.0: 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-2021-3594

CWE-ID: CWE-763

Exploitation vector: Local access

Exploit availability: No public exploit available

Vendor: Freedesktop.org

Affected software:
libslirp

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.

Install updates from vendor's website.

• https://bugzilla.redhat.com/show_bug.cgi?id=1970491