QID 376403

Date Published: 2022-02-24

QID 376403: F5 BIG-IP Application Security Manager (ASM), Local Traffic Manager (LTM), Access Policy Manager (APM) Expat Vulnerability (K05295469)

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.CVE-2019-15903

Vulnerable Component: BIG-IP ASM,LTM,APM

Affected Versions:
16.1.0 - 16.1.1
15.1.0 - 15.1.4
14.1.0 - 14.1.4
13.1.0 - 13.1.4
12.1.0 - 12.1.6
11.6.1 - 11.6.5

QID Detection Logic(Authenticated):
This QID checks for the vulnerable versions of F5 BIG-IP devices using the tmsh command.

A remote attacker could send specially crafted XML which, when parsed by an application using the Expat library, would result in a buffer over-read and cause the application to stop responding.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    For more information about patch details please refer to K05295469
    Vendor References

    CVEs related to QID 376403

    CVE-2019-15903 |
    Software Advisories
    Advisory ID Software Component Link
    K05295469 URL Logo support.f5.com/csp/article/K05295469
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