Vulnerability CVE-2017-15924
Published: 2017-10-27

Description:
In manager.c in ss-manager in shadowsocks-libev 3.1.0, improper parsing allows command injection via shell metacharacters in a JSON configuration request received via 127.0.0.1 UDP traffic, related to the add_server, build_config, and construct_command_line functions.

Type:

CWE-78

 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') )

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Shadowsocks -> Shadowsocks-libev 
Debian -> Debian linux 

 References:
http://openwall.com/lists/oss-security/2017/10/13/2
http://www.debian.org/security/2017/dsa-4009
https://github.com/shadowsocks/shadowsocks-libev/commit/c67d275803dc6ea22c558d06b1f7ba9f94cd8de3
https://github.com/shadowsocks/shadowsocks-libev/issues/1734
https://www.x41-dsec.de/lab/advisories/x41-2017-010-shadowsocks-libev/
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