Red Hat Certificate System 10.4 EUS for RHEL-8: Authentication Bypass by Primary Weakness
CVE-2023-4727 is a high-severity authentication bypass by primary weakness vulnerability in Red Hat Certificate System 10.4 EUS for RHEL-8 from Red Hat, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.66% chance of exploitation within 30 days, higher than 52% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Red Hat Certificate System 10.4 EUS for RHEL-8 you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on github.com for workarounds and exact fixed builds.
Affected products and versions
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (redhat.com).
Official description
A flaw was found in dogtag-pki and pki-core. The token authentication scheme can be bypassed with a LDAP injection. By passing the query string parameter sessionID=*, an attacker can authenticate with an existing session saved in the LDAP directory server, which may lead to escalation of privilege.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Authentication Bypass by Primary Weakness
The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.
More Authentication Bypass by Primary Weakness vulnerabilities (CWE-305)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Other references
- access.redhat.com/errata/RHSA-2024:4051
- access.redhat.com/errata/RHSA-2024:4070
- access.redhat.com/errata/RHSA-2024:4164
- access.redhat.com/errata/RHSA-2024:4165
- access.redhat.com/errata/RHSA-2024:4179
- access.redhat.com/errata/RHSA-2024:4222
- access.redhat.com/errata/RHSA-2024:4367
- access.redhat.com/errata/RHSA-2024:4403
- access.redhat.com/errata/RHSA-2024:4413
- access.redhat.com/security/cve/CVE-2023-4727
- bugzilla.redhat.com/show_bug.cgi?id=2232218
Recent Authentication Bypass by Primary Weakness vulnerabilities
- 7.3 High severity
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
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