VULNERABILITY INTELLIGENCE

CVE-2019-5163

CVSS score7.5 HIGH
EPSS probability2.66%
CISA KEVNot currently listed
Published2019-12-03
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • talos-cna@cisco.com: CWE-306
  • nvd@nist.gov: CWE-306

Primary references