Known exploited vulnerability
CVE-2017-7269
The short answer
CVE-2017-7269 affects n/a n/a and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first. The vendor has linked a patch.
What it is
Buffer overflow in the ScStoragePathFromUrl function in the WebDAV service in Internet Information Services (IIS) 6.0 in Microsoft Windows Server 2003 R2 allows remote attackers to execute arbitrary code via a long header beginning with "If: <http://" in a PROPFIND request, as exploited in the wild in July or August 2016.
Weakness: CWE-120.
Severity
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Nov 3, 2021
Federal due date May 3, 2022
EPSS, next 30 days
100%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
n/a. NVD's record lists the exact affected versions.
References
- 0patch.blogspot.com/2017/03/0patching-immortal-cve-2017-7269.html ExploitThird Party Advisory
- github.com/danigargu/explodingcan Exploit
- github.com/edwardz246003/IIS_exploit Broken LinkThird Party Advisory
- github.com/rapid7/metasploit-framework/pull/8162 Issue TrackingPatch
- medium.com/%40iraklis/number-of-internet-facing-vulnerable-iis-6-0-to-cve-2017-7269-8bd153ef5812 Exploit
- support.microsoft.com/en-us/help/3197835/description-of-the-security-update-for-windows-xp-and-windows-server Broken LinkPatchVendor Advisory
- www.exploit-db.com/exploits/41738/ ExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/41992/ ExploitThird Party AdvisoryVDB Entry
- 0patch.blogspot.com/2017/03/0patching-immortal-cve-2017-7269.html ExploitThird Party Advisory
- github.com/danigargu/explodingcan Exploit
- github.com/edwardz246003/IIS_exploit Broken LinkThird Party Advisory
- github.com/rapid7/metasploit-framework/pull/8162 Issue TrackingPatch
Questions
Is CVE-2017-7269 being exploited?
Yes. CISA added CVE-2017-7269 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03.
How do I fix CVE-2017-7269?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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