Vulnerability identifier: #VU23394

Vulnerability risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5152

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Shadowsocks-libev
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Shadowsocks

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists in the network packet handling functionality when utilizing a Stream Cipher. A remote attacker can send a specially crafted set of network packets, cause an outbound connection from the server and gain unauthorized access to sensitive information on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Shadowsocks-libev: 3.3.2 - 3.3.3

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External links
http://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0942

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.