Patchfirst

Prioritizing “critical” vulnerabilities: A threat intelligence perspective

Intel 471 · 12 Aug 2020 · github.com · Licence: CC-BY-SA-4.0; sources/annoctr/LICENSE.txt

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CVEs this report names

4 CVEs
  1. CVE-2019-19781Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability
    Citrix · Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP ApplianceKEVRansomwarePublic exploitCritical · 9.8T1133External Remote ServicesT1059Command and Scripting Interpreter+1 more · 8 reports
    >99.9%Top 0.01%
    89.9priority
  2. CVE-2020-5902F5 BIG-IP Traffic Management User Interface (TMUI) Remote Code Execution Vulnerability
    F5 · BIG-IPKEVRansomwarePublic exploitCritical · 9.8T1133External Remote ServicesT1190Exploit Public-Facing Application+5 more · 5 reports
    >99.9%Top 0.01%
    89.9priority
  3. CVE-2019-0708Microsoft Remote Desktop Services Remote Code Execution Vulnerability
    Microsoft · Remote Desktop ServicesKEVRansomwarePublic exploitCritical · 9.8T1133External Remote ServicesT1498Network Denial of Service2 reports
    >99.9%Top 0.01%
    86.0priority
  4. CVE-2020-1350Microsoft Windows DNS Server Remote Code Execution Vulnerability
    Microsoft · WindowsKEVPublic exploitCritical · 10.0T1190Exploit Public-Facing ApplicationT1059Command and Scripting Interpreter1 report
    96.7%Top 0.11%
    73.8priority

Where it names them

CVE-2019-19781
### CVE-2019-19781
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This Citrix Application Delivery Controller, Citrix Gateway and Citrix SD-WAN WANOP appliance vulnerability, CVE-2019-19781, was disclosed in December 2019 and last updated in the U.S.
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In December 2019, we began to see less sophisticated threat actors share information from open source reports about CVE-2019-19781 and new forum threads started where actors sought to buy an exploit for the vulnerability.
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Several actors across multiple popular cybercrime forums posted information from open source reporting about the disclosure of CVE-2019-19781.
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Several actors replied expressing a similar interest or discussing exploitability of CVE-2019-19781.
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CVE-2020-5902
### CVE-2020-5902
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The F5 Traffic Management User Interface (TMUI), also referred to as the Configuration utility, reportedly had an RCE vulnerability in multiple versions of BIG-IP that was disclosed publicly as CVE-2020-5902 June 30, 2020.
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Following common trends, several actors shared information from multiple open source reports that discussed the vulnerability, an actor shared an alleged nmap exploit for CVE-2020-5902.
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Several actors posted information from open source reporting about the disclosure of CVE-2020-5902.
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A notable Turkish-speaking actor shared an exploit and Metasploit module for CVE-2020-5902.
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CVE-2019-0708
There was an extensive amount of open source coverage of this vulnerability, which referenced risk scoring previously assigned to the BlueKeep vulnerability CVE-2019-0708.
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CVE-2020-1350
### CVE-2020-1350
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The Microsoft Windows domain name system (DNS) servers remote code execution (RCE) vulnerability, CVE-2020-1350, was disclosed in July 2020 and is still cycling through the initial priority indicators of observed underground activity.
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The criticality of the vulnerability, impacted vendor, type of vulnerability and widespread reporting of CVE-2020-1350 were indicators of its severity.
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There is clear underground interest in CVE-2020-1350 based on threat actor posts seeking to develop code to leverage this vulnerability.
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Several threat actors posted information from open source reporting about CVE-2020-1350 and evidence of publicly available imitation PoC code was observed.
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Techniques drawn from this report

2 links, in kill-chain order

Resource Development Develop Capabilities T1587 for CVE-2020-1350

Labelled by dataset annotators

There is clear underground interest in CVE-2020-1350 based on threat actor posts seeking to develop code to leverage this vulnerability.
Original (opens in a new tab) ↗

Initial Access Exploit Public-Facing Application T1190 for CVE-2019-19781

Labelled by dataset annotators

In December 2019, we began to see less sophisticated threat actors share information from open source reports about CVE-2019-19781 and new forum threads started where actors sought to buy an exploit for the vulnerability.
Original (opens in a new tab) ↗
An actor shared several code variants for CVE-2019-19781.
Original (opens in a new tab) ↗
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