Upstream information
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.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| CVSS detail | National Vulnerability Database | 
|---|---|
| Base Score | 4.3 | 
| Vector | AV:N/AC:M/Au:N/C:N/I:N/A:P | 
| Access Vector | Network | 
| Access Complexity | Medium | 
| Authentication | None | 
| Confidentiality Impact | None | 
| Integrity Impact | None | 
| Availability Impact | Partial | 
| CVSS detail | National Vulnerability Database | 
|---|---|
| Base Score | 7.5 | 
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | 
| Attack Vector | Network | 
| Attack Complexity | Low | 
| Privileges Required | None | 
| User Interaction | None | 
| Scope | Unchanged | 
| Confidentiality Impact | None | 
| Integrity Impact | None | 
| Availability Impact | High | 
| CVSSv3 Version | 3.1 | 
SUSE Security Advisories:
- openSUSE-SU-2019:2667-1, published Fri Dec 8 15:48:43 2023
 - openSUSE-SU-2020:0142-1, published Thu Dec 7 12:55:39 2023
 
List of released packages
| Product(s) | Fixed package version(s) | References | 
|---|---|---|
| SUSE Package Hub 15 SP1 | 
  |  Patchnames:  openSUSE-2020-142  | 
| openSUSE Leap 15.1 | 
  |  Patchnames:  openSUSE-2019-2667  | 
| openSUSE Tumbleweed | 
  |  Patchnames:  openSUSE-Tumbleweed-2024-11379  | 
SUSE Timeline for this CVE
CVE page created: Mon Dec 2 19:12:45 2019CVE page last modified: Sat Nov 1 21:20:47 2025