CVE Vulnerabilities

CVE-2024-45808

Improper Output Neutralization for Logs

Published: Sep 20, 2024 | Modified: Sep 25, 2024
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
6.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Ubuntu

Envoy is a cloud-native high-performance edge/middle/service proxy. A vulnerability has been identified in Envoy that allows malicious attackers to inject unexpected content into access logs. This is achieved by exploiting the lack of validation for the REQUESTED_SERVER_NAME field for access loggers. This issue has been addressed in versions 1.31.2, 1.30.6, 1.29.9, and 1.28.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Weakness

The product does not neutralize or incorrectly neutralizes output that is written to logs.

Affected Software

Name Vendor Start Version End Version
Envoy Envoyproxy * 1.28.7 (excluding)
Envoy Envoyproxy 1.29.0 (including) 1.29.9 (excluding)
Envoy Envoyproxy 1.30.0 (including) 1.30.6 (excluding)
Envoy Envoyproxy 1.31.0 (including) 1.31.2 (excluding)
Red Hat OpenShift Service Mesh 2.6 for RHEL 8 RedHat openshift-service-mesh/grafana-rhel8:2.6.2-3 *
Red Hat OpenShift Service Mesh 2.6 for RHEL 8 RedHat openshift-service-mesh/istio-cni-rhel8:2.6.2-5 *
Red Hat OpenShift Service Mesh 2.6 for RHEL 8 RedHat openshift-service-mesh/istio-must-gather-rhel8:2.6.2-4 *
Red Hat OpenShift Service Mesh 2.6 for RHEL 8 RedHat openshift-service-mesh/istio-rhel8-operator:2.6.2-5 *
Red Hat OpenShift Service Mesh 2.6 for RHEL 8 RedHat openshift-service-mesh/kiali-ossmc-rhel8:1.89.2-3 *
Red Hat OpenShift Service Mesh 2.6 for RHEL 8 RedHat openshift-service-mesh/kiali-rhel8:1.89.4-3 *
Red Hat OpenShift Service Mesh 2.6 for RHEL 8 RedHat openshift-service-mesh/kiali-rhel8-operator:1.89.6-1 *
Red Hat OpenShift Service Mesh 2.6 for RHEL 8 RedHat openshift-service-mesh/pilot-rhel8:2.6.2-5 *
Red Hat OpenShift Service Mesh 2.6 for RHEL 8 RedHat openshift-service-mesh/ratelimit-rhel8:2.6.2-3 *
Red Hat OpenShift Service Mesh 2.6 for RHEL 9 RedHat openshift-service-mesh/proxyv2-rhel9:2.6.2-7 *

Extended Description

This can allow an attacker to forge log entries or inject malicious content into logs. Log forging vulnerabilities occur when:

Potential Mitigations

  • Assume all input is malicious. Use an “accept known good” input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, “boat” may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as “red” or “blue.”
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code’s environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.

References