CVE-2019-1089

EPSS 4.9%

Vexday Risk Score

23Low

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS —EPSS 4.9%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

15 Jul 2019Published on NVD

18 Jul 2019Public PoC

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

An elevation of privilege vulnerability exists in rpcss.dll when the RPC service Activation Kernel improperly handles an RPC request. To exploit this vulnerability, a low level authenticated attacker could run a specially crafted application. The security update addresses this vulnerability by correcting how rpcss.dll handles these requests., aka 'Windows RPCSS Elevation of Privilege Vulnerability'.

Affected products

Microsoft · Multiple

public PoCs found — 2

cve_referencepacketstormsecurity.com/files/153683/Microsoft-Windows-RPCSS-Activation-Kernel-Security-Callback-Privilege-Escalation.htmlunverified exploitdbwww.exploit-db.com/exploits/47135unverified

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

References

http://packetstormsecurity.com/files/153683/Microsoft-Windows-RPCSS-Activation-Kernel-Security-Callback-Privilege-Escalation.html https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1089