Debian Linux Security Advisory 5729-1 - Multiple vulnerabilities have been discovered in the Apache HTTP server, which may result in authentication bypass, execution of scripts in directories not directly reachable by any URL, server-side request forgery or denial of service.
eb3189e905bc36ecd2fc5d02a5e9ced5c23c59fc1c76baa032f550292bf26979Ubuntu Security Notice 6885-2 - USN-6885-1 fixed vulnerabilities in Apache HTTP Server. One of the security fixes introduced a regression when proxying requests to a HTTP/2 server. This update fixes the problem. Marc Stern discovered that the Apache HTTP Server incorrectly handled serving WebSocket protocol upgrades over HTTP/2 connections. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. Orange Tsai discovered that the Apache HTTP Server mod_proxy module incorrectly sent certain request URLs with incorrect encodings to backends. A remote attacker could possibly use this issue to bypass authentication. Orange Tsai discovered that the Apache HTTP Server mod_rewrite module incorrectly handled certain substitutions. A remote attacker could possibly use this issue to execute scripts in directories not directly reachable by any URL, or cause a denial of service. Some environments may require using the new UnsafeAllow3F flag to handle unsafe substitutions. Orange Tsai discovered that the Apache HTTP Server incorrectly handled certain response headers. A remote attacker could possibly use this issue to obtain sensitive information, execute local scripts, or perform SSRF attacks. Orange Tsai discovered that the Apache HTTP Server mod_proxy module incorrectly handled certain requests. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. It was discovered that the Apache HTTP Server incorrectly handled certain handlers configured via AddType. A remote attacker could possibly use this issue to obtain source code.
09a87e1b0ca03b35feb4d66d7489813a4fc3939cea0c49c3c31bf9e7662b2f1fUbuntu Security Notice 6885-1 - Marc Stern discovered that the Apache HTTP Server incorrectly handled serving WebSocket protocol upgrades over HTTP/2 connections. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. Orange Tsai discovered that the Apache HTTP Server mod_proxy module incorrectly sent certain request URLs with incorrect encodings to backends. A remote attacker could possibly use this issue to bypass authentication.
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