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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/LibVNC/libvncserver/commit/aac95a9dcf4bbba87b76c72706c3221a842ca433	Patch Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/06/30/2	Mailing List Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1852356	Issue Tracking Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/06/30/3	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00020.html	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVP7TJVYJDXDFRHVQ3ENEN3H354QPXEZ/	Mailing List Third Party Advisory
https://usn.ubuntu.com/4407-1/	Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBKWIRCZLIY/	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00028.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html	Mailing List Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:19.10:::::::*
	cpe:2.3:o:canonical:ubuntu_linux:20.04::::lts:::

Configuration 3 (hide)

OR	cpe:2.3:o:opensuse:leap:15.1:::::::*
	cpe:2.3:o:opensuse:leap:15.2:::::::*

Configuration 4 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:31:::::::*
	cpe:2.3:o:fedoraproject:fedora:32:::::::*

Configuration 5 (hide)

AND

cpe:2.3:o:siemens:simatic_itc1500_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:siemens:simatic_itc1500:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND

cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:siemens:simatic_itc1500_pro:-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND

cpe:2.3:o:siemens:simatic_itc1900_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:siemens:simatic_itc1900:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND

cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:siemens:simatic_itc1900_pro:-:*:*:*:*:*:*:*

Configuration 9 (hide)

AND

cpe:2.3:o:siemens:simatic_itc2200_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:siemens:simatic_itc2200:-:*:*:*:*:*:*:*

Configuration 10 (hide)

AND

cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:siemens:simatic_itc2200_pro:-:*:*:*:*:*:*:*

Information

Published : 2020-06-30 04:15

Updated : 2022-04-01 11:08

NVD link : CVE-2017-18922

Mitre link : CVE-2017-18922

JSON object : View

CWE

CWE-787

Out-of-bounds Write

Products Affected

siemens

simatic_itc2200_pro
simatic_itc1900_pro
simatic_itc2200
simatic_itc1500_firmware
simatic_itc2200_pro_firmware
simatic_itc1500
simatic_itc1500_pro
simatic_itc1900_firmware
simatic_itc2200_firmware
simatic_itc1500_pro_firmware
simatic_itc1900_pro_firmware
simatic_itc1900

libvncserver_project

libvncserver

fedoraproject

fedora

canonical

ubuntu_linux

opensuse

leap

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A malicious attacker could exploit this by sending specially crafted WebSocket frames to a server, causing a heap-based buffer overflow."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-787"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2017-18922", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "HIGH", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}}, "publishedDate": "2020-06-30T11:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "0.9.12"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:siemens:simatic_itc1500_firmware:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "3.2.1.0", "versionStartIncluding": "3.0.0.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:siemens:simatic_itc1500:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}, {"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "3.2.1.0", "versionStartIncluding": "3.0.0.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:siemens:simatic_itc1500_pro:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}, {"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:siemens:simatic_itc1900_firmware:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "3.2.1.0", "versionStartIncluding": "3.0.0.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:siemens:simatic_itc1900:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}, {"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "3.2.1.0", "versionStartIncluding": "3.0.0.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:siemens:simatic_itc1900_pro:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}, {"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:siemens:simatic_itc2200_firmware:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "3.2.1.0", "versionStartIncluding": "3.0.0.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:siemens:simatic_itc2200:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}, {"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "3.2.1.0", "versionStartIncluding": "3.0.0.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:siemens:simatic_itc2200_pro:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-04-01T18:08Z"}

9.8 /10