CVE-2019-5164

NameCVE-2019-5164
DescriptionAn exploitable code execution vulnerability exists in the ss-manager binary of Shadowsocks-libev 3.3.2. Specially crafted network packets sent to ss-manager can cause an arbitrary binary to run, resulting in code execution and privilege escalation. An attacker can send network packets to trigger this vulnerability.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
shadowsocks-libev (PTS)stretch (security), stretch2.6.3+ds-3+deb9u1vulnerable
buster3.2.5+ds-1vulnerable
bullseye, sid3.3.3+ds-3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
shadowsocks-libevsource(unstable)3.3.3+ds-2

Notes

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0958
https://github.com/shadowsocks/shadowsocks-libev/issues/2537
Mitigation: Using a unix socket with ss-manager via --manager-socket.
Exposing ss-manager to pubic is always dangerous.

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