Vulnerability Details CVE-2017-18922
It was discovered that websockets.c in LibVNCServer prior to 0.9.12 did not properly decode certain WebSocket frames. A malicious attacker could exploit this by sending specially crafted WebSocket frames to a server, causing a heap-based buffer overflow.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.044
EPSS Ranking 88.4%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00028.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html
- http://www.openwall.com/lists/oss-security/2020/06/30/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1852356
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/aac95a9dcf4bbba87b76c72706c3221a842ca433
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBKWIRCZLIY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVP7TJVYJDXDFRHVQ3ENEN3H354QPXEZ/
- https://usn.ubuntu.com/4407-1/
- https://www.openwall.com/lists/oss-security/2020/06/30/2
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00028.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html
- http://www.openwall.com/lists/oss-security/2020/06/30/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1852356
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/aac95a9dcf4bbba87b76c72706c3221a842ca433
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBKWIRCZLIY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVP7TJVYJDXDFRHVQ3ENEN3H354QPXEZ/
- https://usn.ubuntu.com/4407-1/
- https://www.openwall.com/lists/oss-security/2020/06/30/2
Products affected by CVE-2017-18922
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.10
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.11
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.4
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.5
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.6
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.7
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.8
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.8.1
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.8.2
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.9
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cpe:2.3:h:siemens:simatic_itc1500:-
-
cpe:2.3:h:siemens:simatic_itc1500_pro:-
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cpe:2.3:h:siemens:simatic_itc1900:-
-
cpe:2.3:h:siemens:simatic_itc1900_pro:-
-
cpe:2.3:h:siemens:simatic_itc2200:-
-
cpe:2.3:h:siemens:simatic_itc2200_pro:-
-
cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:canonical:ubuntu_linux:18.04
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cpe:2.3:o:canonical:ubuntu_linux:19.10
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cpe:2.3:o:canonical:ubuntu_linux:20.04
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cpe:2.3:o:fedoraproject:fedora:31
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cpe:2.3:o:fedoraproject:fedora:32
-
cpe:2.3:o:opensuse:leap:15.1
-
cpe:2.3:o:opensuse:leap:15.2
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cpe:2.3:o:siemens:simatic_itc1500_firmware:3.0.0.0
-
cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:3.0.0.0
-
cpe:2.3:o:siemens:simatic_itc1900_firmware:3.0.0.0
-
cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:3.0.0.0
-
cpe:2.3:o:siemens:simatic_itc2200_firmware:3.0.0.0
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cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:3.0.0.0