CVE-2019-5163: Opensuse Backports

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

An exploitable denial-of-service vulnerability exists in the UDPRelay functionality of Shadowsocks-libev 3.3.2. When utilizing a Stream Cipher and a local_address, arbitrary UDP packets can cause a FATAL error code path and exit. An attacker can send arbitrary UDP packets to trigger this vulnerability.

Affected products

• Opensuse Backports: version sle-15 only
• Opensuse Leap: version 15.1 only
• Shadowsocks Shadowsocks-Libev: version 3.3.2 only

Published 2019-12-03. Last modified 2026-06-17.