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Sid 1-31405

Message

SERVER-APACHE Apache Chunked-Encoding worm attempt

Summary

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

CVE-2002-0071:

CVSS base score 7.5

CVSS impact score 6.4

CVSS exploitability score 10.0

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

CVE-2002-0079:

CVSS base score 7.5

CVSS impact score 6.4

CVSS exploitability score 10.0

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

CVE-2002-0392:

CVSS base score 7.5

CVSS impact score 6.4

CVSS exploitability score 10.0

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Detailed information

CVE-2002-0071: 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.

CVE-2002-0079: Buffer overflow in the chunked encoding transfer mechanism in Internet Information Server (IIS) 4.0 and 5.0 Active Server Pages allows attackers to cause a denial of service or execute arbitrary code.

CVE-2002-0392: 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.

Affected systems

  • microsoft internetinformationserver 4.0
  • microsoft internetinformationserver 5.0
  • apache http_server 1.0
  • apache http_server 1.0.2
  • apache http_server 1.0.3
  • apache http_server 1.0.5
  • apache http_server 1.1
  • apache http_server 1.1.1
  • apache http_server 1.2
  • apache http_server 1.2.5
  • apache http_server 1.3
  • apache http_server 1.3.1
  • apache http_server 1.3.3
  • apache http_server 1.3.4
  • apache http_server 1.3.9
  • apache http_server 1.3.11
  • apache http_server 1.3.12
  • apache http_server 1.3.13
  • apache http_server 1.3.14
  • apache http_server 1.3.15
  • apache http_server 1.3.16
  • apache http_server 1.3.17
  • apache http_server 1.3.18
  • apache http_server 1.3.19
  • apache http_server 1.3.20
  • apache http_server 1.3.22
  • apache http_server 1.3.23
  • apache http_server 1.3.24
  • apache http_server 2.0
  • apache http_server 2.0.28
  • apache http_server 2.0.32
  • apache http_server 2.0.35
  • apache http_server 2.0.36

Ease of attack

CVE-2002-0071:

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

CVE-2002-0079:

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

CVE-2002-0392:

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

False positives

None known

False negatives

None known

Corrective action

Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

Contributors

  • 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.

Additional References