high
7.4
Advisory Published
Updated

F5-K000132941

First published: Mon Mar 13 2023(Updated: )

There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network.

Affected SoftwareAffected VersionHow to fix
F5 BIG-IP and BIG-IQ Centralized Management>=17.0.0<=17.1.0
17.1.1
F5 BIG-IP and BIG-IQ Centralized Management>=16.1.0<=16.1.3
16.1.4
F5 BIG-IP and BIG-IQ Centralized Management>=15.1.0<=15.1.9
15.1.10
F5 BIG-IP and BIG-IQ Centralized Management>=14.1.0<=14.1.5
F5 BIG-IP and BIG-IQ Centralized Management>=13.1.0<=13.1.5
F5 BIG-IP and BIG-IQ Centralized Management>=8.0.0<=8.4.0
F5 BIG-IP and BIG-IQ Centralized Management=7.1.0
F5 Traffix Systems Signaling Delivery Controller=5.2.0

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Reference Links

Frequently Asked Questions

  • What is the severity of F5-K000132941?

    F5-K000132941 has a severity rating of high due to the potential for type confusion vulnerabilities.

  • How do I fix F5-K000132941?

    To fix F5-K000132941, upgrade to the patched versions provided by F5 such as 17.1.1, 16.1.4, or 15.1.10 depending on your current version.

  • What software does F5-K000132941 affect?

    F5-K000132941 affects F5 BIG-IP, BIG-IQ Centralized Management, and Traffix SDC across several versions.

  • What is the nature of the vulnerability in F5-K000132941?

    The nature of the vulnerability in F5-K000132941 involves type confusion in X.400 address processing within an X.509 GeneralName.

  • Is F5-K000132941 remotely exploitable?

    Yes, F5-K000132941 may be remotely exploitable due to improper handling of X.400 address parsing.

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