Home/CVE/A buffer overflow in Smart Card authentication code in gpkcsp.dll in Microsoft Windows XP through SP3 and Server 2003 th
CVE

CVE-2017-0176

A buffer overflow in Smart Card authentication code in gpkcsp.dll in Microsoft Windows XP through SP3 and Server 2003 th

A buffer overflow in Smart Card authentication code in gpkcsp.dll in Microsoft Windows XP through SP3 and Server 2003 through SP2 allows a remote attacker to execute arbitrary code on the target computer, provided that the computer is joined in a Windows domain and has Remote Desktop Protocol connectivity (or Terminal Services) enabled.

HIGH · CVSS 8.1 EPSS 0.7019
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
▤

Affected Products & Versions

2
microsoft windows server 2003all versions
microsoft windows xpall versions
⚠

Public Exploits & PoCs

1
pocblog.fortinet.com · deep-analysis-of-esteemauditblog.fortinet.com
◈

Detection Rules (IDS/IPS)

2
snort-communityOS-WINDOWS Microsoft Windows empty RDP cookie negotiation attemptpolicy-violation
snort-communityOS-WINDOWS Microsoft Windows Server 2003 smart card authentication buffer overflow attemptattempted-admin
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.0 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Jun 2017 · 02:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/98550Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/98752Third Party AdvisoryVDB Entry
https://blog.0patch.com/2017/06/a-quick-analysis-of-microsofts.html
https://blogs.technet.microsoft.com/msrc/2017/04/14/protecting-customers-and-evaluating-risk/PatchVendor Advisory
https://support.microsoft.com/en-us/help/4022747/security-update-for-windows-xp-and-windows-server-2003PatchVendor Advisory
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