CVE-2017-18922
CRITICAL
9.8
CVSS Score
Published: June 30, 2020 at 11:00 AM UTC
Updated: June 17, 2026 at 01:13 AM UTC
16 products affected across 5 vendorsFedoraUbuntu LinuxLeap
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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%v < 0.9.12
Affected range stops below 0.9.12, so it looks safe — our inference, not a vendor statement
Leap· openSUSEdrupal
95%3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1500 (same device)
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1500-pro (same device)
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1900 (same device)
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1900-pro (same device)
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc2200 (same device)
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc2200-pro (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory 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
References (13)
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00020.htmlVendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00028.htmlVendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.htmlVendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.htmlVendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.htmlMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/06/30/3x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1852356x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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