Yann Ylavic

4 exploits Active since Jul 2015
CVE-2015-0253 WRITEUP WRITEUP
Apache HTTP Server 2.4.12 - Denial of Service via Missing Request Method
The read_request_line function in server/protocol.c in the Apache HTTP Server 2.4.12 does not initialize the protocol structure member, which allows remote attackers to cause a denial of service (NULL pointer dereference and process crash) by sending a request that lacks a method to an installation that enables the INCLUDES filter and has an ErrorDocument 400 directive specifying a local URI.
CVE-2015-3183 WRITEUP WRITEUP
Apache HTTP Server 2.2.0-2.2.30 - HTTP Request Smuggling via Chunked Transfer Coding
The chunked transfer coding implementation in the Apache HTTP Server before 2.4.14 does not properly parse chunk headers, which allows remote attackers to conduct HTTP request smuggling attacks via a crafted request, related to mishandling of large chunk-size values and invalid chunk-extension characters in modules/http/http_filters.c.
CVE-2017-9798 WRITEUP HIGH WRITEUP
Apache httpd <2.4.28 - Use After Free
Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user's .htaccess file, or if httpd.conf has certain misconfigurations, aka Optionsbleed. This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a use-after-free issue and thus secret data is not always sent, and the specific data depends on many factors including configuration. Exploitation with .htaccess can be blocked with a patch to the ap_limit_section function in server/core.c.
CVSS 7.5
CVE-2015-3183 WRITEUP WRITEUP
Apache HTTP Server 2.2.0-2.2.30 - HTTP Request Smuggling via Chunked Transfer Coding
The chunked transfer coding implementation in the Apache HTTP Server before 2.4.14 does not properly parse chunk headers, which allows remote attackers to conduct HTTP request smuggling attacks via a crafted request, related to mishandling of large chunk-size values and invalid chunk-extension characters in modules/http/http_filters.c.