SERVER-APACHE -- Snort has detected traffic exploiting vulnerabilities in Apache servers.
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. Impact: CVSS base score 7.5 CVSS impact score 6.4 CVSS exploitability score 10.0 confidentialityImpact PARTIAL integrityImpact PARTIAL availabilityImpact PARTIAL Details: Ease of Attack:
Apache 1.3 through 1.3.24, and Apache 2.0 through 2.0.36, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a chunk-encoded HTTP request that causes Apache to use an incorrect size. This rule detects and block exploitation of vuln.
No public information
No known false positives
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].
No rule groups
Denial of Service
Denial of Service attacks aim to make a server or program unresponsive for users. These attacks may be volume-based, to overwhelm the system, or they may use certain logical flaws in the software to cut the service off from the users. The attack may come from one or multiple sources. These attacks do not usually lead to a remote code execution. Volume based attacks are best handled using a firewall application.
CVE-2002-0071 |
Loading description |
CVE-2002-0079 |
Loading description |
CVE-2002-0392 |
Loading description |
Tactic: Initial Access
Technique: Exploit Public-Facing Application
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org