CVE-2019-1019

Microsoft Windows Security Feature Bypass Vulnerability

CVSS 8.5 HIGHEPSS 15.1%

Vexday Risk Score

46Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 8.5EPSS 15.1%KEV nãoPoC públicaNuclei —Metasploit —Patch referenciado

Lifecycle

12 Jun 2019Published on NVD

12 Jul 2019Public PoC

Recommendation: Plan a near-term fix — a public PoC already exists.

A security feature bypass vulnerability exists where a NETLOGON message is able to obtain the session key and sign messages. To exploit this vulnerability, an attacker could send a specially crafted authentication request. An attacker who successfully exploited this vulnerability could access another machine using the original user privileges. The issue has been addressed by changing how NTLM validates network authentication messages.

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

Affected products

public PoCs found — 2

cve_referencepacketstormsecurity.com/files/153639/Microsoft-Windows-HTTP-To-SMB-NTLM-Reflection-Privilege-Escalation.htmlunverified exploitdbwww.exploit-db.com/exploits/47115unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

http://packetstormsecurity.com/files/153639/Microsoft-Windows-HTTP-To-SMB-NTLM-Reflection-Privilege-Escalation.html https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1019 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1019