SERVER-APACHE Apache Chunked-Encoding worm attempt
Buffer overflow in the ism.dll ISAPI extension that implements HTR scripting in Internet Information Server (IIS) 4.0 and 5.0 allows attackers to cause a denial of service or execute arbitrary code via HTR requests with long variable names.
CVSS base score 7.5
CVSS impact score 6.4
CVSS exploitability score 10.0
- microsoft internetinformationserver 4.0
- microsoft internetinformationserver 5.0
Ease of attack
Upgrade to the latest non-affected version of the software.
Apply the appropriate vendor supplied patches.
- Talos research team.
- This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology.
- For more information see nvd.