Vulnerability CVE-2019-5163
Published: 2019-12-03   Modified: 2019-12-04

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.

Type:

CWE-306

 (Missing Authentication for Critical Function)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Shadowsocks -> Shadowsocks-libev 

 References:
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00023.html
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0956
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