Red Hat: CVE-2023-0286: X.400 address type confusion in X.509 GeneralName (Multiple Advisories)

Red Hat: CVE-2023-0286: X.400 address type confusion in X.509 GeneralName (Multiple Advisories)

Severity

9

CVSS

(AV:N/AC:M/Au:N/C:C/I:N/A:C)

Published

02/08/2023

Created

03/02/2023

Added

03/01/2023

Modified

01/28/2025

Description

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.

Solution(s)

• redhat-upgrade-edk2-aarch64
• redhat-upgrade-edk2-debugsource
• redhat-upgrade-edk2-ovmf
• redhat-upgrade-edk2-tools
• redhat-upgrade-edk2-tools-debuginfo
• redhat-upgrade-edk2-tools-doc
• redhat-upgrade-openssl
• redhat-upgrade-openssl-debuginfo
• redhat-upgrade-openssl-debugsource
• redhat-upgrade-openssl-devel
• redhat-upgrade-openssl-libs
• redhat-upgrade-openssl-libs-debuginfo
• redhat-upgrade-openssl-perl
• redhat-upgrade-openssl-static

References

• CVE-2023-0286
• RHSA-2023:0946
• RHSA-2023:1199
• RHSA-2023:1335
• RHSA-2023:1405
• RHSA-2023:1440
• RHSA-2023:1441
• RHSA-2023:2022
• RHSA-2023:2165
• RHSA-2023:2932
• RHSA-2023:4128

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