QID 378374

Date Published: 2023-06-27

QID 378374: IBM Hypertext Transfer Protocol (HTTP) Server Denial of Service (DoS) Vulnerabilty (6839161)

IBM HTTP Server used by IBM WebSphere Application Server is vulnerable to denial of service due to libexpat.

CVE-2022-43680 : libexpat is vulnerable to a denial of service, caused by a use-after free created by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.
CVE-2013-0340 : xpat is vulnerable to a denial of service, caused by the improper handling of internal entity expansion.
CVE-2017-9233 : libexpat is vulnerable to a denial of service, caused by a XML External Entity vulnerability in the parser.
ffected Versions:
IBM HTTP Server For V9.0.0.0 through 9.0.5.14
IBM HTTP Server For V8.5.0.0 through 8.5.5.22
IBM HTTP Server For 8.0.0.0 through 8.0.0.15
IBM HTTP Server For V7.0.0.0 through 7.0.0.45
QID Detection Logic (Authenticated):
Operating System: Windows
The QID checks the key "HKLM\SYSTEM\CurrentControlSet\Services" to see if IBM HTTP vulnerable version installed on the host or not.

QID Detection Logic (Authenticated):
Operating System: Linux
The QID checks the vulnerable version IBM HTTP Server. "version.signature" is used to verify the version.

An attacker could exploit this vulnerability to consume all available resources.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as High - 6.8 severity.
    • Solution
    The vendor has released advisories and updates to fix these vulnerabilities. Refer to the following link for further details: 6839161
    Vendor References

    CVEs related to QID 378374

    CVE-2022-43680 | CVE-2013-0340 | CVE-2017-9233 |
    Software Advisories
    Advisory ID Software Component Link
    6839161 URL Logo www.ibm.com/support/pages/node/6839161
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