Background exploitation KEV catalog Ransomware

CVE-2017-0145

Microsoft SMBv1 Remote Code Execution Vulnerability

CheckOps priority index

8.6/10 Patch within 24 h

Severity8.8

Probability9.0

Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 89.9% higher than 99.8% of CVEs

CVSS 3.1 8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:

Exploited for 1,727 days 10 Feb 2022

CISA due date 10 Aug 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

KEV catalog (CISA)10 Feb 2022
Exploited in EUVD (ENISA)10 Feb 2022
Used by ransomwareyes
EPSS above 10 %89.9%
No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; and Windows 10 Gold, 1511, and 1607; and Windows Server 2016 allows remote attackers to execute arbitrary code via crafted packets, aka "Windows SMB Remote Code Execution Vulnerability." This vulnerability is different from those described in CVE-2017-0143, CVE-2017-0144, CVE-2017-0146, and CVE-2017-0148.

Affected products

Windows SMBSMBv1

Affected versions

The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; and Windows 10 Gold, 1511, and 1607

Weaknesses (CWE)

CWE-20

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

17 Mar 2017
Published
10 Feb 2022
Exploitation reported (ENISA)
10 Feb 2022
Added to the KEV catalog
10 Aug 2022
CISA remediation due date
26 Sept 2026
EPSS peak: 89.9%

References

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