Vulnerability Name:

CVE-2019-5163 (CCN-172571)

Assigned:2019-12-03
Published:2019-12-03
Updated:2022-06-17
Summary:An 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.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.4 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-306
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-5163

Source: SUSE
Type: Mailing List, Third Party Advisory
openSUSE-SU-2019:2667

Source: SUSE
Type: Mailing List, Third Party Advisory
openSUSE-SU-2020:0142

Source: XF
Type: UNKNOWN
shadowsockslibev-cve20195163-dos(172571)

Source: CCN
Type: Shadowsocks Web site
Shadowsocks-libev

Source: CCN
Type: Talos Vulnerability Report TALOS-2019-0956
Shadowsocks-libev ss-server UdpRelay Denial-of-Service Vulnerability

Source: MISC
Type: Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0956

Vulnerable Configuration:Configuration 1:
  • cpe:/a:shadowsocks:shadowsocks-libev:3.3.2:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:opensuse:leap:15.1:*:*:*:*:*:*:*
  • OR cpe:/o:opensuse:backports:sle-15:sp1:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:shadowsocks:shadowsocks-libev:3.3.2:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20195163
    V
    		CVE-2019-5163
    2022-06-30
    oval:org.opensuse.security:def:112828
    P
    		libshadowsocks-libev2-3.3.5-1.9 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:106293
    P
    		libshadowsocks-libev2-3.3.5-1.9 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:63231
    P
    		python3-pywbem-0.11.0-2.21 on GA media (Moderate)
    2021-09-21
    oval:org.opensuse.security:def:63369
    P
    		redis-6.0.10-1.7.1 on GA media (Moderate)
    2021-08-10
    oval:org.opensuse.security:def:63029
    P
    		osc-0.172.0-3.26.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:62750
    P
    		gnome-autoar-devel-0.2.3-3.3.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:74358
    P
    		Security update for openexr (Important)
    2021-06-24
    oval:org.opensuse.security:def:62550
    P
    		libexif-devel-0.6.21-3.16 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:62573
    P
    		libpango-1_0-0-32bit-1.40.14-3.3.1 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:63595
    P
    		libvncclient0-0.9.10-4.9.1 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:62549
    P
    		libexempi-devel-2.4.5-1.11 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:64264
    P
    		glibc-32bit on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:74484
    P
    		Security update for shadowsocks-libev (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:63922
    P
    		Security update for webkit2gtk3 (Important)
    2020-12-01
    oval:org.opensuse.security:def:64306
    P
    		libXp-devel on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:64056
    P
    		Security update for LibVNCServer (Important)
    2020-12-01
    oval:org.opensuse.security:def:64418
    P
    		mozilla-nspr-32bit on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:64162
    P
    		Security update for libvirt (Important)
    2020-12-01
    oval:org.opensuse.security:def:100229
    P
    		 (Moderate)
    2020-09-22
    oval:org.opensuse.security:def:93516
    P
    		Security update for shadowsocks-libev (Moderate)
    2020-01-29
    oval:org.opensuse.security:def:110108
    P
    		Security update for shadowsocks-libev (Moderate)
    2019-12-11
    oval:com.ubuntu.disco:def:201951630000000
    V
    		CVE-2019-5163 on Ubuntu 19.04 (disco) - medium.
    2019-12-03
    oval:com.ubuntu.bionic:def:201951630000000
    V
    		CVE-2019-5163 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-12-03
    BACK
    shadowsocks shadowsocks-libev 3.3.2
    opensuse leap 15.1
    opensuse backports sle-15 sp1
    shadowsocks shadowsocks-libev 3.3.2