RCE in Shadowsocks Shadowsocks-Libev
CVE-2017-15924
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (68.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Shadowsocks Shadowsocks-Libev — versions 1.3, 1.3.2, 1.4.0
- Debian Linux — versions 9.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/shadowsocks/shadowsocks-libev/commit/c67d275803dc6ea22c558d06b1f7ba9… (Third Party Advisory)
- github.com/shadowsocks/shadowsocks-libev/issues/1734 (Third Party Advisory)
- www.x41-dsec.de/lab/advisories/x41-2017-010-shadowsocks-libev/ (Exploit, Third Party Advisory)
- www.debian.org/security/2017/dsa-4009 (vendor-advisory, Third Party Advisory)
- openwall.com/lists/oss-security/2017/10/13/2 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-15924?
- CVE-2017-15924 is a high-severity vulnerability in Shadowsocks Shadowsocks-Libev, classified under OS Command Injection. CVSS score: 7.8/10. Published 2017-10-27.
- How severe is CVE-2017-15924?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-15924 known to be exploited?
- 12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.