Logging Subsystem For Red Hat Openshift
Monthly
Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resources by rapidly opening and immediately canceling (RST_STREAM) large numbers of streams over a single connection, a technique dubbed the 'Rapid Reset' attack. The flaw is confirmed actively exploited (CISA KEV) following large-scale weaponization observed August through October 2023, with publicly available exploit code and an EPSS score of 94.45% placing it in the 100th percentile for likelihood of exploitation. Virtually every major HTTP/2 stack - including nghttp2, Netty, Envoy, and Eclipse Jetty - is affected.
The system CA trust store shipped in Red Hat's ca-certificates RPM packages includes eMudhra root authorities that signed intermediate CA certificates protected by weak private keys, so a man-in-the-middle attacker who can intercept traffic and who can factor or guess those keys could mint certificates for arbitrary hostnames that TLS clients using the system trust store would accept (CVSS 6.8, CWE-295). Affected platforms span Red Hat Enterprise Linux 6 through 10 plus a long list of layered products such as OpenShift Container Platform 4, Satellite 6, Quay 3, Advanced Cluster Management, and the cert-manager and logging operators. Attackers need a privileged network position and a victim client that actually initiates a TLS connection validated against the system store, so this is a trust-anchoring and impersonation problem rather than a remotely reachable code-execution flaw; there is no availability impact and no public exploit code identified at time of analysis. Because individual intermediate certificates cannot be selectively distrusted across every consumer of the system store, Red Hat is removing the parent root CAs outright, which is the crux of the remediation.
Privilege escalation via ServiceAccount token exfiltration affects the OpenShift Cluster Logging Operator, allowing a user with delegated editor-level access to the ClusterLogForwarder resource to harvest SA tokens they were never authorized to use. The operator creates ServiceAccount tokens and forwards them to configured log output destinations without verifying whether the ClusterLogForwarder creator holds permission to consume those credentials. An attacker who has obtained an editor role within the logging namespace can weaponize this design gap to exfiltrate high-privilege SA tokens and escalate to broader cluster access. No public exploit code has been identified at time of analysis, and this vulnerability is not currently listed in the CISA KEV catalog.
Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resources by rapidly opening and immediately canceling (RST_STREAM) large numbers of streams over a single connection, a technique dubbed the 'Rapid Reset' attack. The flaw is confirmed actively exploited (CISA KEV) following large-scale weaponization observed August through October 2023, with publicly available exploit code and an EPSS score of 94.45% placing it in the 100th percentile for likelihood of exploitation. Virtually every major HTTP/2 stack - including nghttp2, Netty, Envoy, and Eclipse Jetty - is affected.
The system CA trust store shipped in Red Hat's ca-certificates RPM packages includes eMudhra root authorities that signed intermediate CA certificates protected by weak private keys, so a man-in-the-middle attacker who can intercept traffic and who can factor or guess those keys could mint certificates for arbitrary hostnames that TLS clients using the system trust store would accept (CVSS 6.8, CWE-295). Affected platforms span Red Hat Enterprise Linux 6 through 10 plus a long list of layered products such as OpenShift Container Platform 4, Satellite 6, Quay 3, Advanced Cluster Management, and the cert-manager and logging operators. Attackers need a privileged network position and a victim client that actually initiates a TLS connection validated against the system store, so this is a trust-anchoring and impersonation problem rather than a remotely reachable code-execution flaw; there is no availability impact and no public exploit code identified at time of analysis. Because individual intermediate certificates cannot be selectively distrusted across every consumer of the system store, Red Hat is removing the parent root CAs outright, which is the crux of the remediation.
Privilege escalation via ServiceAccount token exfiltration affects the OpenShift Cluster Logging Operator, allowing a user with delegated editor-level access to the ClusterLogForwarder resource to harvest SA tokens they were never authorized to use. The operator creates ServiceAccount tokens and forwards them to configured log output destinations without verifying whether the ClusterLogForwarder creator holds permission to consume those credentials. An attacker who has obtained an editor role within the logging namespace can weaponize this design gap to exfiltrate high-privilege SA tokens and escalate to broader cluster access. No public exploit code has been identified at time of analysis, and this vulnerability is not currently listed in the CISA KEV catalog.