Red Hat Certificate System 10
Monthly
Dogtag PKI (pki-core) and its commercial counterpart, Red Hat Certificate System 9/10/11, contain a fail-open authentication flaw in the CMCAuthForEST plugin that lets an authenticated, low-privileged EST enrollment user obtain CA-signed certificates bearing arbitrary subject names. The bug is triggered when an EST fullcmc enrollment request is sent over BasicAuth without an end-user TLS client certificate; the SSL_CLIENT_CERT session attribute then retains the EST subsystem's agent certificate, so downstream authorization logic wrongly grants agent-level privileges. Exploitation is assessed as requiring only a valid EST user account (CVSS 8.1, PR:L, unauthenticated by client certificate, no user interaction), making it a realistic privilege-escalation path for any provisioned EST user or insider; however, no public exploit code has been identified at time of analysis and the flaw is not confirmed as actively exploited (not in CISA KEV).
A remote, unauthenticated attacker can exhaust the JVM heap and cause a denial of service by sending a small crafted image to any RESTEasy (JAX-RS) endpoint that consumes an image request body, because the framework's IIOImageProvider decodes the image through ImageIO without validating declared dimensions or pixel count. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, base 7.5) confirms a clean, low-complexity, availability-only flaw with no confidentiality or integrity impact, consistent with CWE-409 data amplification. Reachability is the key limiting factor: only applications that actually expose a resource method consuming image content types through the image provider are affected, and no public exploit code was identified at time of analysis.
Improper certificate validation in JSS (Java Security Services) allows the JSSTrustManager class to accept CA certificates from the NSS database that lack TRUSTED_CA trust flags, meaning certificates never explicitly designated as trust anchors can still be used to anchor TLS chains. In non-default deployments where certificate revocation checking has been disabled, this creates a viable path for a man-in-the-middle attacker to forge certificates accepted by PKI client connections, with high confidentiality and low integrity impact. No public exploit has been identified at time of analysis, and the AC:H CVSS rating reflects the meaningful attack complexity - MITM positioning plus a specific non-default configuration must both be present.
Server-side request forgery in Dogtag PKI's ACME responder enables unauthenticated ACME account holders to direct the certificate server to make arbitrary HTTP GET requests to internal network addresses. The validator incorrectly accepts IP address literals as valid DNS identifiers and follows HTTP redirects without enforcing RFC-compliant public-address filtering, allowing internal network reconnaissance. When the InMemory database backend is in use, the response body returned by internal services is exposed to the attacker through ACME challenge error messages, compounding the confidentiality impact. No public exploit code or active exploitation has been identified at time of analysis.
Authorization bypass in Red Hat Certificate System's CA renewal path allows an authenticated user to renew a certificate belonging to a different realm without the required realm-based authorization check. Affects versions 9, 10, and 11 of the Certificate System on Red Hat Enterprise Linux 6 through 10. No evidence of active exploitation or public exploit code exists at the time of analysis, and EPSS probability is low (0.21%).
Dogtag PKI (pki-core) and its commercial counterpart, Red Hat Certificate System 9/10/11, contain a fail-open authentication flaw in the CMCAuthForEST plugin that lets an authenticated, low-privileged EST enrollment user obtain CA-signed certificates bearing arbitrary subject names. The bug is triggered when an EST fullcmc enrollment request is sent over BasicAuth without an end-user TLS client certificate; the SSL_CLIENT_CERT session attribute then retains the EST subsystem's agent certificate, so downstream authorization logic wrongly grants agent-level privileges. Exploitation is assessed as requiring only a valid EST user account (CVSS 8.1, PR:L, unauthenticated by client certificate, no user interaction), making it a realistic privilege-escalation path for any provisioned EST user or insider; however, no public exploit code has been identified at time of analysis and the flaw is not confirmed as actively exploited (not in CISA KEV).
A remote, unauthenticated attacker can exhaust the JVM heap and cause a denial of service by sending a small crafted image to any RESTEasy (JAX-RS) endpoint that consumes an image request body, because the framework's IIOImageProvider decodes the image through ImageIO without validating declared dimensions or pixel count. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, base 7.5) confirms a clean, low-complexity, availability-only flaw with no confidentiality or integrity impact, consistent with CWE-409 data amplification. Reachability is the key limiting factor: only applications that actually expose a resource method consuming image content types through the image provider are affected, and no public exploit code was identified at time of analysis.
Improper certificate validation in JSS (Java Security Services) allows the JSSTrustManager class to accept CA certificates from the NSS database that lack TRUSTED_CA trust flags, meaning certificates never explicitly designated as trust anchors can still be used to anchor TLS chains. In non-default deployments where certificate revocation checking has been disabled, this creates a viable path for a man-in-the-middle attacker to forge certificates accepted by PKI client connections, with high confidentiality and low integrity impact. No public exploit has been identified at time of analysis, and the AC:H CVSS rating reflects the meaningful attack complexity - MITM positioning plus a specific non-default configuration must both be present.
Server-side request forgery in Dogtag PKI's ACME responder enables unauthenticated ACME account holders to direct the certificate server to make arbitrary HTTP GET requests to internal network addresses. The validator incorrectly accepts IP address literals as valid DNS identifiers and follows HTTP redirects without enforcing RFC-compliant public-address filtering, allowing internal network reconnaissance. When the InMemory database backend is in use, the response body returned by internal services is exposed to the attacker through ACME challenge error messages, compounding the confidentiality impact. No public exploit code or active exploitation has been identified at time of analysis.
Authorization bypass in Red Hat Certificate System's CA renewal path allows an authenticated user to renew a certificate belonging to a different realm without the required realm-based authorization check. Affects versions 9, 10, and 11 of the Certificate System on Red Hat Enterprise Linux 6 through 10. No evidence of active exploitation or public exploit code exists at the time of analysis, and EPSS probability is low (0.21%).