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CVE-2017-7269: Microsoft Windows Server Buffer Overflow Vulnerability

criticalknown exploitedpublic exploitCVE-2017-7269
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft Windows Server 2003 R2 contains a buffer overflow vulnerability in Internet Information Services (IIS) 6.0 which allows remote attackers to execute code via a long header beginning with "If: <http://" in a PROPFIND request.

CSIRTS triage

vendor: Microsoftproduct: Windows Server 2003 R2Memory corruption
What
The vulnerability is a buffer overflow in IIS 6.0 that allows remote code execution.
Who is affected
Deployments of Microsoft Windows Server 2003 R2 with IIS 6.0.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security patches for Windows Server.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2017-7269

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2017-7269coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Windows Server

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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