QID 376060

Date Published: 2021-11-22

QID 376060: F5 BIG-IP Application Security Manager (ASM), Access Policy Manager (APM), Local Traffic Manager (LTM) Python Vulnerability (K57542514)

Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached against a given hostname). The components are: urllib.parse.urlsplit, urllib.parse.urlparse. The attack vector is: A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly. CVE-2019-9636

Vulnerable Component: BIG-IP APM,LTM,ASM

Affected Versions:
16.0.0 - 16.0.1
15.1.0 - 15.1.2
14.1.0 - 14.1.3
13.1.0 - 13.1.3
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 may be able to use a specially crafted URL to locate cookies or authentication data and send that information to a different host than when parsed correctly. BIG-IP Extended Application Verification (EAV) monitors using the Python urlsplit() function with URLs from an untrusted source may be impacted by this vulnerability.

  • CVSS V3 rated as Critical - 9.8 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    The vendor has released patch, for more information please visit: K57542514
    Vendor References

    CVEs related to QID 376060

    CVE-2019-9636 |
    Software Advisories
    Advisory ID Software Component Link
    K57542514 URL Logo support.f5.com/csp/article/K57542514
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