Vulnerability in Microsoft Internet Information Server
CVE-2000-0457
ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file and appending a large number of encoded spaces (%20) and terminated with a .htr extension, aka the ".HTR File Fragment Reading" or "File Fragment Reading via .HTR" vulnerability.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 7.5 (High). Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.528 (99.0th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.528 · newest: 0.528 · change: 0.000
Affected products
- Microsoft Internet Information Server — versions 4.0
- Microsoft Internet Information Services — versions 5.0
Public proof-of-concept exploits
References
- marc.info/ (mailing-list)
- docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-031 (vendor-advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/4448 (vdb-entry)
- www.securityfocus.com/bid/1193 (vdb-entry)
Frequently asked questions
- What is CVE-2000-0457?
- CVE-2000-0457 is a vulnerability in Microsoft Internet Information Server. Published 2000-05-11.
- Is CVE-2000-0457 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.