CVE-2023-0286
Scores
EPSS
Percentile: 89.0%
CVSS
CVSS Score: 7.4/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
High (H)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
High (H)
Measures the impact to the confidentiality of information
Integrity Impact
None (N)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
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.
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Sources
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{ "unaffected": true}
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{ "fixed": "20220126gitbb1bba3d77-4.el8"}
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{ "fixed": "20190829git37eef91017ad-9.el8_2.2"}
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{ "fixed": "20190829git37eef91017ad-9.el8_2.2"}
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{ "fixed": "20190829git37eef91017ad-9.el8_2.2"}
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{ "fixed": "20200602gitca407c7246bf-4.el8_4.3"}
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{ "fixed": "20200602gitca407c7246bf-4.el8_4.3"}
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{ "fixed": "20220126gitbb1bba3d77-2.el8_6.1"}
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{ "fixed": "20221207gitfff6d81270b5-9.el9_2"}
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