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Vulnerability details: VCID-y75q-tuag-aaam
Vulnerability ID VCID-y75q-tuag-aaam
Aliases CVE-2017-18922
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-787 Out-of-bounds Write
CWE-122 Heap-based Buffer Overflow
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-18922.html
rhas Important https://access.redhat.com/errata/RHSA-2020:3281
rhas Important https://access.redhat.com/errata/RHSA-2020:3385
rhas Important https://access.redhat.com/errata/RHSA-2020:3456
rhas Important https://access.redhat.com/errata/RHSA-2020:3588
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-18922.json
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00401 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.00805 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
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epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
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epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
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epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
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epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.0442 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
epss 0.04797 https://api.first.org/data/v1/epss?cve=CVE-2017-18922
rhbs high https://bugzilla.redhat.com/show_bug.cgi?id=1852356
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18922
cvssv3.1 8.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
generic_textual Medium https://github.com/LibVNC/libvncserver/commit/aac95a9dcf4bbba87b76c72706c3221a842ca433
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-18922
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-18922
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-18922
generic_textual Medium https://ubuntu.com/security/notices/USN-4407-1
generic_textual Medium https://usn.ubuntu.com/usn/usn-4407-1
generic_textual Medium https://www.openwall.com/lists/oss-security/2020/06/30/2
Reference id Reference type URL
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://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-18922.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-18922.json
https://api.first.org/data/v1/epss?cve=CVE-2017-18922
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18922
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBKWIRCZLIY/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVP7TJVYJDXDFRHVQ3ENEN3H354QPXEZ/
https://ubuntu.com/security/notices/USN-4407-1
https://usn.ubuntu.com/4407-1/
https://usn.ubuntu.com/usn/usn-4407-1
https://www.openwall.com/lists/oss-security/2020/06/30/2
http://www.openwall.com/lists/oss-security/2020/06/30/3
1852356 https://bugzilla.redhat.com/show_bug.cgi?id=1852356
cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
CVE-2017-18922 https://nvd.nist.gov/vuln/detail/CVE-2017-18922
RHSA-2020:3281 https://access.redhat.com/errata/RHSA-2020:3281
RHSA-2020:3385 https://access.redhat.com/errata/RHSA-2020:3385
RHSA-2020:3456 https://access.redhat.com/errata/RHSA-2020:3456
RHSA-2020:3588 https://access.redhat.com/errata/RHSA-2020:3588
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-18922.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-18922
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-18922
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-18922
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.74108
EPSS Score 0.00401
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.