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Apache » Http Server : Security Vulnerabilities (Denial Of Service)

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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2017-9788 20 DoS +Info 2017-07-13 2017-11-13
6.4
None Remote Low Not required Partial None Partial
In Apache httpd before 2.2.34 and 2.4.x before 2.4.27, the value placeholder in [Proxy-]Authorization headers of type 'Digest' was not initialized or reset before or between successive key=value assignments by mod_auth_digest. Providing an initial key with no '=' assignment could reflect the stale value of uninitialized pool memory used by the prior request, leading to leakage of potentially confidential information, and a segfault in other cases resulting in denial of service.
2 CVE-2016-8740 20 DoS 2016-12-05 2017-11-13
5.0
None Remote Low Not required None None Partial
The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not restrict request-header length, which allows remote attackers to cause a denial of service (memory consumption) via crafted CONTINUATION frames in an HTTP/2 request.
3 CVE-2016-1546 399 DoS 2016-07-06 2017-06-30
4.3
None Remote Medium Not required None None Partial
The Apache HTTP Server 2.4.17 and 2.4.18, when mod_http2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote attackers to cause a denial of service (stream-processing outage) via modified flow-control windows.
4 CVE-2015-0253 DoS 2015-07-20 2017-09-21
5.0
None Remote Low Not required None None Partial
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.
5 CVE-2015-0228 20 DoS 2015-03-07 2017-09-21
5.0
None Remote Low Not required None None Partial
The lua_websocket_read function in lua_request.c in the mod_lua module in the Apache HTTP Server through 2.4.12 allows remote attackers to cause a denial of service (child-process crash) by sending a crafted WebSocket Ping frame after a Lua script has called the wsupgrade function.
6 CVE-2014-3583 119 DoS Overflow 2014-12-15 2017-10-02
5.0
None Remote Low Not required None None Partial
The handle_headers function in mod_proxy_fcgi.c in the mod_proxy_fcgi module in the Apache HTTP Server 2.4.10 allows remote FastCGI servers to cause a denial of service (buffer over-read and daemon crash) via long response headers.
7 CVE-2014-3523 399 DoS 2014-07-20 2016-11-28
5.0
None Remote Low Not required None None Partial
Memory leak in the winnt_accept function in server/mpm/winnt/child.c in the WinNT MPM in the Apache HTTP Server 2.4.x before 2.4.10 on Windows, when the default AcceptFilter is enabled, allows remote attackers to cause a denial of service (memory consumption) via crafted requests.
8 CVE-2014-0231 399 DoS 2014-07-20 2017-01-06
5.0
None Remote Low Not required None None Partial
The mod_cgid module in the Apache HTTP Server before 2.4.10 does not have a timeout mechanism, which allows remote attackers to cause a denial of service (process hang) via a request to a CGI script that does not read from its stdin file descriptor.
9 CVE-2014-0226 362 1 DoS Exec Code Overflow +Info 2014-07-20 2017-01-06
6.8
None Remote Medium Not required Partial Partial Partial
Race condition in the mod_status module in the Apache HTTP Server before 2.4.10 allows remote attackers to cause a denial of service (heap-based buffer overflow), or possibly obtain sensitive credential information or execute arbitrary code, via a crafted request that triggers improper scoreboard handling within the status_handler function in modules/generators/mod_status.c and the lua_ap_scoreboard_worker function in modules/lua/lua_request.c.
10 CVE-2014-0118 399 DoS 2014-07-20 2017-01-06
4.3
None Remote Medium Not required None None Partial
The deflate_in_filter function in mod_deflate.c in the mod_deflate module in the Apache HTTP Server before 2.4.10, when request body decompression is enabled, allows remote attackers to cause a denial of service (resource consumption) via crafted request data that decompresses to a much larger size.
11 CVE-2014-0117 20 DoS 2014-07-20 2016-07-08
4.3
None Remote Medium Not required None None Partial
The mod_proxy module in the Apache HTTP Server 2.4.x before 2.4.10, when a reverse proxy is enabled, allows remote attackers to cause a denial of service (child-process crash) via a crafted HTTP Connection header.
12 CVE-2014-0098 20 DoS 2014-03-18 2017-01-06
5.0
None Remote Low Not required None None Partial
The log_cookie function in mod_log_config.c in the mod_log_config module in the Apache HTTP Server before 2.4.8 allows remote attackers to cause a denial of service (segmentation fault and daemon crash) via a crafted cookie that is not properly handled during truncation.
13 CVE-2013-6438 20 DoS 2014-03-18 2017-01-06
5.0
None Remote Low Not required None None Partial
The dav_xml_get_cdata function in main/util.c in the mod_dav module in the Apache HTTP Server before 2.4.8 does not properly remove whitespace characters from CDATA sections, which allows remote attackers to cause a denial of service (daemon crash) via a crafted DAV WRITE request.
14 CVE-2013-4352 DoS 2014-07-20 2014-08-04
4.3
None Remote Medium Not required None None Partial
The cache_invalidate function in modules/cache/cache_storage.c in the mod_cache module in the Apache HTTP Server 2.4.6, when a caching forward proxy is enabled, allows remote HTTP servers to cause a denial of service (NULL pointer dereference and daemon crash) via vectors that trigger a missing hostname value.
15 CVE-2013-1896 264 DoS 2013-07-10 2017-09-18
4.3
None Remote Medium Not required None None Partial
mod_dav.c in the Apache HTTP Server before 2.2.25 does not properly determine whether DAV is enabled for a URI, which allows remote attackers to cause a denial of service (segmentation fault) via a MERGE request in which the URI is configured for handling by the mod_dav_svn module, but a certain href attribute in XML data refers to a non-DAV URI.
16 CVE-2012-4557 399 DoS 2012-11-30 2017-09-18
5.0
None Remote Low Not required None None Partial
The mod_proxy_ajp module in the Apache HTTP Server 2.2.12 through 2.2.21 places a worker node into an error state upon detection of a long request-processing time, which allows remote attackers to cause a denial of service (worker consumption) via an expensive request.
17 CVE-2012-1181 119 DoS Overflow 2012-03-19 2017-08-28
5.0
None Remote Low Not required None None Partial
fcgid_spawn_ctl.c in the mod_fcgid module 2.3.6 for the Apache HTTP Server does not recognize the FcgidMaxProcessesPerClass directive for a virtual host, which makes it easier for remote attackers to cause a denial of service (memory consumption) via a series of HTTP requests that triggers a process count higher than the intended limit.
18 CVE-2012-0031 399 DoS 2012-01-18 2016-08-22
4.6
None Local Low Not required Partial Partial Partial
scoreboard.c in the Apache HTTP Server 2.2.21 and earlier might allow local users to cause a denial of service (daemon crash during shutdown) or possibly have unspecified other impact by modifying a certain type field within a scoreboard shared memory segment, leading to an invalid call to the free function.
19 CVE-2012-0021 20 DoS 2012-01-27 2016-08-22
2.6
None Remote High Not required None None Partial
The log_cookie function in mod_log_config.c in the mod_log_config module in the Apache HTTP Server 2.2.17 through 2.2.21, when a threaded MPM is used, does not properly handle a %{}C format string, which allows remote attackers to cause a denial of service (daemon crash) via a cookie that lacks both a name and a value.
20 CVE-2011-4415 20 DoS 2011-11-08 2012-07-03
1.2
None Local High Not required None None Partial
The ap_pregsub function in server/util.c in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x through 2.2.21, when the mod_setenvif module is enabled, does not restrict the size of values of environment variables, which allows local users to cause a denial of service (memory consumption or NULL pointer dereference) via a .htaccess file with a crafted SetEnvIf directive, in conjunction with a crafted HTTP request header, related to (1) the "len +=" statement and (2) the apr_pcalloc function call, a different vulnerability than CVE-2011-3607.
21 CVE-2011-3348 399 DoS 2011-09-20 2017-09-18
4.3
None Remote Medium Not required None None Partial
The mod_proxy_ajp module in the Apache HTTP Server before 2.2.21, when used with mod_proxy_balancer in certain configurations, allows remote attackers to cause a denial of service (temporary "error state" in the backend server) via a malformed HTTP request.
22 CVE-2011-3192 399 1 DoS 2011-08-29 2017-09-18
7.8
None Remote Low Not required None None Complete
The byterange filter in the Apache HTTP Server 1.3.x, 2.0.x through 2.0.64, and 2.2.x through 2.2.19 allows remote attackers to cause a denial of service (memory and CPU consumption) via a Range header that expresses multiple overlapping ranges, as exploited in the wild in August 2011, a different vulnerability than CVE-2007-0086.
23 CVE-2011-1928 399 DoS 2011-05-24 2012-10-29
4.3
None Remote Medium Not required None None Partial
The fnmatch implementation in apr_fnmatch.c in the Apache Portable Runtime (APR) library 1.4.3 and 1.4.4, and the Apache HTTP Server 2.2.18, allows remote attackers to cause a denial of service (infinite loop) via a URI that does not match unspecified types of wildcard patterns, as demonstrated by attacks against mod_autoindex in httpd when a /*/WEB-INF/ configuration pattern is used. NOTE: this issue exists because of an incorrect fix for CVE-2011-0419.
24 CVE-2011-1783 399 DoS 2011-06-06 2017-09-18
4.3
None Remote Medium Not required None None Partial
The mod_dav_svn module for the Apache HTTP Server, as distributed in Apache Subversion 1.5.x and 1.6.x before 1.6.17, when the SVNPathAuthz short_circuit option is enabled, allows remote attackers to cause a denial of service (infinite loop and memory consumption) in opportunistic circumstances by requesting data.
25 CVE-2011-1752 DoS 2011-06-06 2017-09-18
5.0
None Remote Low Not required None None Partial
The mod_dav_svn module for the Apache HTTP Server, as distributed in Apache Subversion before 1.6.17, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a request for a baselined WebDAV resource, as exploited in the wild in May 2011.
26 CVE-2011-0419 399 DoS 2011-05-16 2017-09-18
4.3
None Remote Medium Not required None None Partial
Stack consumption vulnerability in the fnmatch implementation in apr_fnmatch.c in the Apache Portable Runtime (APR) library before 1.4.3 and the Apache HTTP Server before 2.2.18, and in fnmatch.c in libc in NetBSD 5.1, OpenBSD 4.8, FreeBSD, Apple Mac OS X 10.6, Oracle Solaris 10, and Android, allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via *? sequences in the first argument, as demonstrated by attacks against mod_autoindex in httpd.
27 CVE-2010-1452 DoS 2010-07-28 2017-09-18
5.0
None Remote Low Not required None None Partial
The (1) mod_cache and (2) mod_dav modules in the Apache HTTP Server 2.2.x before 2.2.16 allow remote attackers to cause a denial of service (process crash) via a request that lacks a path.
28 CVE-2010-0408 DoS 2010-03-05 2017-09-18
5.0
None Remote Low Not required None None Partial
The ap_proxy_ajp_request function in mod_proxy_ajp.c in mod_proxy_ajp in the Apache HTTP Server 2.2.x before 2.2.15 does not properly handle certain situations in which a client sends no request body, which allows remote attackers to cause a denial of service (backend server outage) via a crafted request, related to use of a 500 error code instead of the appropriate 400 error code.
29 CVE-2010-0010 189 1 DoS Exec Code Overflow 2010-02-02 2017-09-18
6.8
None Remote Medium Not required Partial Partial Partial
Integer overflow in the ap_proxy_send_fb function in proxy/proxy_util.c in mod_proxy in the Apache HTTP Server before 1.3.42 on 64-bit platforms allows remote origin servers to cause a denial of service (daemon crash) or possibly execute arbitrary code via a large chunk size that triggers a heap-based buffer overflow.
30 CVE-2009-3094 DoS 2009-09-08 2017-09-18
2.6
None Remote High Not required None None Partial
The ap_proxy_ftp_handler function in modules/proxy/proxy_ftp.c in the mod_proxy_ftp module in the Apache HTTP Server 2.0.63 and 2.2.13 allows remote FTP servers to cause a denial of service (NULL pointer dereference and child process crash) via a malformed reply to an EPSV command.
31 CVE-2009-2699 DoS 2009-10-13 2017-08-16
5.0
None Remote Low Not required None None Partial
The Solaris pollset feature in the Event Port backend in poll/unix/port.c in the Apache Portable Runtime (APR) library before 1.3.9, as used in the Apache HTTP Server before 2.2.14 and other products, does not properly handle errors, which allows remote attackers to cause a denial of service (daemon hang) via unspecified HTTP requests, related to the prefork and event MPMs.
32 CVE-2009-1955 399 DoS 2009-06-07 2017-09-28
7.8
None Remote Low Not required None None Complete
The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used in the mod_dav and mod_dav_svn modules in the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document containing a large number of nested entity references, as demonstrated by a PROPFIND request, a similar issue to CVE-2003-1564.
33 CVE-2009-1891 399 DoS 2009-07-10 2017-09-28
7.1
None Remote Medium Not required None None Complete
The mod_deflate module in Apache httpd 2.2.11 and earlier compresses large files until completion even after the associated network connection is closed, which allows remote attackers to cause a denial of service (CPU consumption).
34 CVE-2009-1890 189 DoS 2009-07-05 2017-09-28
7.1
None Remote Medium Not required None None Complete
The stream_reqbody_cl function in mod_proxy_http.c in the mod_proxy module in the Apache HTTP Server before 2.3.3, when a reverse proxy is configured, does not properly handle an amount of streamed data that exceeds the Content-Length value, which allows remote attackers to cause a denial of service (CPU consumption) via crafted requests.
35 CVE-2008-2364 399 DoS 2008-06-13 2017-09-28
5.0
None Remote Low Not required None None Partial
The ap_proxy_http_process_response function in mod_proxy_http.c in the mod_proxy module in the Apache HTTP Server 2.0.63 and 2.2.8 does not limit the number of forwarded interim responses, which allows remote HTTP servers to cause a denial of service (memory consumption) via a large number of interim responses.
36 CVE-2007-6750 399 DoS 2011-12-27 2017-09-28
5.0
None Remote Low Not required None None Partial
The Apache HTTP Server 1.x and 2.x allows remote attackers to cause a denial of service (daemon outage) via partial HTTP requests, as demonstrated by Slowloris, related to the lack of the mod_reqtimeout module in versions before 2.2.15.
37 CVE-2007-6422 399 DoS 2008-01-08 2017-09-28
4.0
None Remote Low Single system None None Partial
The balancer_handler function in mod_proxy_balancer in the Apache HTTP Server 2.2.0 through 2.2.6, when a threaded Multi-Processing Module is used, allows remote authenticated users to cause a denial of service (child process crash) via an invalid bb variable.
38 CVE-2007-3847 DoS 2007-08-23 2017-09-28
5.0
None Remote Low Not required None None Partial
The date handling code in modules/proxy/proxy_util.c (mod_proxy) in Apache 2.3.0, when using a threaded MPM, allows remote origin servers to cause a denial of service (caching forward proxy process crash) via crafted date headers that trigger a buffer over-read.
39 CVE-2007-3304 DoS 2007-06-20 2017-10-10
4.7
None Local Medium Not required None None Complete
Apache httpd 1.3.37, 2.0.59, and 2.2.4 with the Prefork MPM module, allows local users to cause a denial of service by modifying the worker_score and process_score arrays to reference an arbitrary process ID, which is sent a SIGUSR1 signal from the master process, aka "SIGUSR1 killer."
40 CVE-2007-3303 94 DoS Exec Code 2007-06-20 2012-10-30
4.9
None Local Low Not required None None Complete
Apache httpd 2.0.59 and 2.2.4, with the Prefork MPM module, allows local users to cause a denial of service via certain code sequences executed in a worker process that (1) stop request processing by killing all worker processes and preventing creation of replacements or (2) hang the system by forcing the master process to fork an arbitrarily large number of worker processes. NOTE: This might be an inherent design limitation of Apache with respect to worker processes in hosted environments.
41 CVE-2007-1349 399 DoS 2007-03-29 2017-10-10
4.3
None Remote Medium Not required None None Partial
PerlRun.pm in Apache mod_perl before 1.30, and RegistryCooker.pm in mod_perl 2.x, does not properly escape PATH_INFO before use in a regular expression, which allows remote attackers to cause a denial of service (resource consumption) via a crafted URI.
42 CVE-2007-0086 DoS 2007-01-05 2008-11-15
7.8
None Remote Low Not required None None Complete
** DISPUTED ** The Apache HTTP Server, when accessed through a TCP connection with a large window size, allows remote attackers to cause a denial of service (network bandwidth consumption) via a Range header that specifies multiple copies of the same fragment. NOTE: the severity of this issue has been disputed by third parties, who state that the large window size required by the attack is not normally supported or configured by the server, or that a DDoS-style attack would accomplish the same goal.
43 CVE-2006-3747 189 DoS Exec Code 2006-07-28 2017-07-19
7.6
Admin Remote High Not required Complete Complete Complete
Off-by-one error in the ldap scheme handling in the Rewrite module (mod_rewrite) in Apache 1.3 from 1.3.28, 2.0.46 and other versions before 2.0.59, and 2.2, when RewriteEngine is enabled, allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via crafted URLs that are not properly handled using certain rewrite rules.
44 CVE-2005-3357 399 DoS 2005-12-31 2017-10-10
5.4
None Remote High Not required None None Complete
mod_ssl in Apache 2.0 up to 2.0.55, when configured with an SSL vhost with access control and a custom error 400 error page, allows remote attackers to cause a denial of service (application crash) via a non-SSL request to an SSL port, which triggers a NULL pointer dereference.
45 CVE-2005-2970 DoS 2005-10-25 2017-10-10
5.0
None Remote Low Not required None None Partial
Memory leak in the worker MPM (worker.c) for Apache 2, in certain circumstances, allows remote attackers to cause a denial of service (memory consumption) via aborted connections, which prevents the memory for the transaction pool from being reused for other connections.
46 CVE-2005-2728 DoS 2005-08-30 2017-10-10
5.0
None Remote Low Not required None None Partial
The byte-range filter in Apache 2.0 before 2.0.54 allows remote attackers to cause a denial of service (memory consumption) via an HTTP header with a large Range field.
47 CVE-2005-1268 DoS Overflow 2005-08-05 2017-10-10
5.0
None Remote Low Not required None None Partial
Off-by-one error in the mod_ssl Certificate Revocation List (CRL) verification callback in Apache, when configured to use a CRL, allows remote attackers to cause a denial of service (child process crash) via a CRL that causes a buffer overflow of one null byte.
48 CVE-2004-0942 DoS 2005-02-09 2017-10-10
5.0
None Remote Low Not required None None Partial
Apache webserver 2.0.52 and earlier allows remote attackers to cause a denial of service (CPU consumption) via an HTTP GET request with a MIME header containing multiple lines with a large number of space characters.
49 CVE-2004-0809 DoS 2004-09-16 2017-10-10
5.0
None Remote Low Not required None None Partial
The mod_dav module in Apache 2.0.50 and earlier allows remote attackers to cause a denial of service (child process crash) via a certain sequence of LOCK requests for a location that allows WebDAV authoring access.
50 CVE-2004-0786 DoS 2004-10-20 2017-10-10
5.0
None Remote Low Not required None None Partial
The IPv6 URI parsing routines in the apr-util library for Apache 2.0.50 and earlier allow remote attackers to cause a denial of service (child process crash) via a certain URI, as demonstrated using the Codenomicon HTTP Test Tool.
Total number of vulnerabilities : 77   Page : 1 (This Page)2
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