CVE-2016-0049

EPSS 13.4%

Vexday Risk Score

30Low

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Proof of concept

Popular PoC on GitHub (51 stars) — exploitation code widely available.

CVSS —EPSS 13.4%KEV nãoPoC públicaNuclei —Metasploit —Patch referenciado

Lifecycle

10 Feb 2016Published on NVD

15 Feb 2016Public PoC

Weaponization speed

5 daysto first PoC

Weaponized quickly — attackers prioritized this vulnerability. Patch urgently.

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

Kerberos in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, and Windows 10 Gold and 1511 does not properly validate password changes, which allows remote attackers to bypass authentication by deploying a crafted Key Distribution Center (KDC) and then performing a sign-in action, aka "Windows Kerberos Security Feature Bypass."

Affected products

n/a · n/a

public PoCs found — 4

githubgithub.com/JackOfMostTrades/bluebox★ 51 cve_referencepacketstormsecurity.com/files/135797/Windows-Kerberos-Security-Feature-Bypass.htmlunverified cve_referencewww.exploit-db.com/exploits/39442/unverified exploitdbwww.exploit-db.com/exploits/39442unverified

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

References

http://packetstormsecurity.com/files/135797/Windows-Kerberos-Security-Feature-Bypass.html https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-014 https://www.exploit-db.com/exploits/39442/http://www.securityfocus.com/bid/82535 http://www.securitytracker.com/id/1034985