CVE-2019-5163

NameCVE-2019-5163
DescriptionAn 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.
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-2019-0956
https://github.com/shadowsocks/shadowsocks-libev/issues/2536

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