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CVE-2023-0286

Publication date 7 February 2023

Last updated 24 July 2024

Ubuntu priority

High

Why this priority?

Cvss 3 Severity Score

7.4 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
edk2 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored
22.10 kinetic Ignored
22.04 LTS jammy
Needs evaluation
20.04 LTS focal
Needs evaluation
18.04 LTS bionic
Needs evaluation
16.04 LTS xenial
Needs evaluation
14.04 LTS trusty Ignored
nodejs 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Fixed 12.22.9~dfsg-1ubuntu3.3
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
openssl 24.04 LTS noble
Fixed 3.0.8-1ubuntu1
23.10 mantic
Fixed 3.0.8-1ubuntu1
23.04 lunar
Fixed 3.0.8-1ubuntu1
22.10 kinetic
Fixed 3.0.5-2ubuntu2.1
22.04 LTS jammy
Fixed 3.0.2-0ubuntu1.8
20.04 LTS focal
Fixed 1.1.1f-1ubuntu2.17
18.04 LTS bionic
Fixed 1.1.1-1ubuntu2.1~18.04.21
16.04 LTS xenial
14.04 LTS trusty
openssl1.0 22.10 kinetic Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Fixed 1.0.2n-1ubuntu5.11
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

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Severity score breakdown

Parameter Value
Base score 7.4 · High
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-5844-1
    • OpenSSL vulnerabilities
    • 7 February 2023
    • USN-5845-1
    • OpenSSL vulnerabilities
    • 7 February 2023
    • USN-5845-2
    • OpenSSL vulnerabilities
    • 7 February 2023
    • USN-6564-1
    • Node.js vulnerabilities
    • 3 January 2024

Other references