A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker.
Users are recommended to upgrade to version 2.4.67, which fixes this issue.
Weakness
Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Http_server | Apache | * | 2.4.67 (excluding) |
| JBoss Core Services for RHEL 8 | RedHat | jbcs-httpd24-httpd-0:2.4.62-17.el8jbcs | * |
| JBoss Core Services for RHEL 8 | RedHat | jbcs-httpd24-mod_http2-0:2.0.29-14.el8jbcs | * |
| JBoss Core Services for RHEL 8 | RedHat | jbcs-httpd24-mod_jk-0:1.2.50-18.redhat_1.el8jbcs | * |
| JBoss Core Services for RHEL 8 | RedHat | jbcs-httpd24-mod_md-1:2.4.28-20.el8jbcs | * |
| JBoss Core Services for RHEL 8 | RedHat | jbcs-httpd24-mod_proxy_cluster-0:1.3.22-13.el8jbcs | * |
| JBoss Core Services for RHEL 8 | RedHat | jbcs-httpd24-mod_security-0:2.9.6-20.el8jbcs | * |
| Red Hat Enterprise Linux 10 | RedHat | httpd-0:2.4.63-13.el10_2.4 | * |
| Red Hat Enterprise Linux 9 | RedHat | httpd-0:2.4.62-13.el9_8.5 | * |
| Red Hat JBoss Core Services 2.4.62.SP6 | RedHat | mod_auth_digest.so | * |
| Red Hat Hardened Images | RedHat | httpd-main-2.4.67-1.hum1 | * |
| Red Hat Insights proxy 1.5 | RedHat | insights-proxy/insights-proxy-container-rhel9:1786433656 | * |
| Apache2 | Ubuntu | devel | * |
| Apache2 | Ubuntu | esm-infra-legacy/trusty | * |
| Apache2 | Ubuntu | esm-infra-legacy/xenial | * |
| Apache2 | Ubuntu | esm-infra/bionic | * |
| Apache2 | Ubuntu | esm-infra/focal | * |
| Apache2 | Ubuntu | esm-infra/xenial | * |
| Apache2 | Ubuntu | jammy | * |
| Apache2 | Ubuntu | noble | * |
| Apache2 | Ubuntu | questing | * |
| Apache2 | Ubuntu | resolute | * |
| Apache2 | Ubuntu | upstream | * |
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/462.html
- https://cwe.mitre.org/data/definitions/541.html
- https://cwe.mitre.org/data/definitions/580.html