National Vulnerability Database

National Vulnerability Database

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Search Parameters:
  • Contains Software Flaws (CVE)
  • CPE Product Version: cpe:/a:apache:http_server:2.4.6
There are 64 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2019-0220

A vulnerability was found in Apache HTTP Server 2.4.0 to 2.4.38. When the path component of a request URL contains multiple consecutive slashes ('/'), directives such as LocationMatch and RewriteRule must account for duplicates in regular expressions while other aspects of the servers processing will implicitly collapse them.

Published: June 11, 2019; 05:29:00 PM -04:00
V3.0: 5.3 MEDIUM
    V2: 5.0 MEDIUM
CVE-2019-0217

In Apache HTTP Server 2.4 release 2.4.38 and prior, a race condition in mod_auth_digest when running in a threaded server could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions.

Published: April 08, 2019; 05:29:00 PM -04:00
V3.0: 7.5 HIGH
    V2: 6.0 MEDIUM
CVE-2018-17199

In Apache HTTP Server 2.4 release 2.4.37 and prior, mod_session checks the session expiry time before decoding the session. This causes session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded.

Published: January 30, 2019; 05:29:00 PM -05:00
V3.0: 7.5 HIGH
    V2: 5.0 MEDIUM
CVE-2018-17189

In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 (mod_http2) connections.

Published: January 30, 2019; 05:29:00 PM -05:00
V3.0: 5.3 MEDIUM
    V2: 5.0 MEDIUM
CVE-2016-4975

Possible CRLF injection allowing HTTP response splitting attacks for sites which use mod_userdir. This issue was mitigated by changes made in 2.4.25 and 2.2.32 which prohibit CR or LF injection into the "Location" or other outbound header key or value. Fixed in Apache HTTP Server 2.4.25 (Affected 2.4.1-2.4.23). Fixed in Apache HTTP Server 2.2.32 (Affected 2.2.0-2.2.31).

Published: August 14, 2018; 08:29:00 AM -04:00
V3.0: 6.1 MEDIUM
    V2: 4.3 MEDIUM
CVE-2018-1312

In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.

Published: March 26, 2018; 11:29:00 AM -04:00
V3.0: 9.8 CRITICAL
    V2: 6.8 MEDIUM
CVE-2018-1303

A specially crafted HTTP request header could have crashed the Apache HTTP Server prior to version 2.4.30 due to an out of bound read while preparing data to be cached in shared memory. It could be used as a Denial of Service attack against users of mod_cache_socache. The vulnerability is considered as low risk since mod_cache_socache is not widely used, mod_cache_disk is not concerned by this vulnerability.

Published: March 26, 2018; 11:29:00 AM -04:00
V3.0: 7.5 HIGH
    V2: 5.0 MEDIUM
CVE-2018-1302

When an HTTP/2 stream was destroyed after being handled, the Apache HTTP Server prior to version 2.4.30 could have written a NULL pointer potentially to an already freed memory. The memory pools maintained by the server make this vulnerability hard to trigger in usual configurations, the reporter and the team could not reproduce it outside debug builds, so it is classified as low risk.

Published: March 26, 2018; 11:29:00 AM -04:00
V3.0: 5.9 MEDIUM
    V2: 4.3 MEDIUM
CVE-2018-1301

A specially crafted request could have crashed the Apache HTTP Server prior to version 2.4.30, due to an out of bound access after a size limit is reached by reading the HTTP header. This vulnerability is considered very hard if not impossible to trigger in non-debug mode (both log and build level), so it is classified as low risk for common server usage.

Published: March 26, 2018; 11:29:00 AM -04:00
V3.0: 5.9 MEDIUM
    V2: 4.3 MEDIUM
CVE-2018-1283

In Apache httpd 2.4.0 to 2.4.29, when mod_session is configured to forward its session data to CGI applications (SessionEnv on, not the default), a remote user may influence their content by using a "Session" header. This comes from the "HTTP_SESSION" variable name used by mod_session to forward its data to CGIs, since the prefix "HTTP_" is also used by the Apache HTTP Server to pass HTTP header fields, per CGI specifications.

Published: March 26, 2018; 11:29:00 AM -04:00
V3.0: 5.3 MEDIUM
    V2: 3.5 LOW
CVE-2017-15715

In Apache httpd 2.4.0 to 2.4.29, the expression specified in <FilesMatch> could match '$' to a newline character in a malicious filename, rather than matching only the end of the filename. This could be exploited in environments where uploads of some files are are externally blocked, but only by matching the trailing portion of the filename.

Published: March 26, 2018; 11:29:00 AM -04:00
V3.0: 8.1 HIGH
    V2: 6.8 MEDIUM
CVE-2017-15710

In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all.

Published: March 26, 2018; 11:29:00 AM -04:00
V3.0: 7.5 HIGH
    V2: 5.0 MEDIUM
CVE-2016-8612

Apache HTTP Server mod_cluster before version httpd 2.4.23 is vulnerable to an Improper Input Validation in the protocol parsing logic in the load balancer resulting in a Segmentation Fault in the serving httpd process.

Published: March 09, 2018; 03:29:00 PM -05:00
V3.0: 4.3 MEDIUM
    V2: 3.3 LOW
CVE-2017-9798

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.

Published: September 18, 2017; 11:29:00 AM -04:00
V3.0: 7.5 HIGH
    V2: 5.0 MEDIUM
CVE-2016-8743

Apache HTTP Server, in all releases prior to 2.2.32 and 2.4.25, was liberal in the whitespace accepted from requests and sent in response lines and headers. Accepting these different behaviors represented a security concern when httpd participates in any chain of proxies or interacts with back-end application servers, either through mod_proxy or using conventional CGI mechanisms, and may result in request smuggling, response splitting and cache pollution.

Published: July 27, 2017; 05:29:00 PM -04:00
V3.0: 7.5 HIGH
    V2: 5.0 MEDIUM
CVE-2016-2161

In Apache HTTP Server versions 2.4.0 to 2.4.23, malicious input to mod_auth_digest can cause the server to crash, and each instance continues to crash even for subsequently valid requests.

Published: July 27, 2017; 05:29:00 PM -04:00
V3.0: 7.5 HIGH
    V2: 5.0 MEDIUM
CVE-2016-0736

In Apache HTTP Server versions 2.4.0 to 2.4.23, mod_session_crypto was encrypting its data/cookie using the configured ciphers with possibly either CBC or ECB modes of operation (AES256-CBC by default), hence no selectable or builtin authenticated encryption. This made it vulnerable to padding oracle attacks, particularly with CBC.

Published: July 27, 2017; 05:29:00 PM -04:00
V3.0: 7.5 HIGH
    V2: 5.0 MEDIUM
CVE-2017-9788

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.

Published: July 13, 2017; 12:29:00 PM -04:00
V3.0: 9.1 CRITICAL
    V2: 6.4 MEDIUM
CVE-2017-7679

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_mime can read one byte past the end of a buffer when sending a malicious Content-Type response header.

Published: June 19, 2017; 09:29:00 PM -04:00
V3.0: 9.8 CRITICAL
    V2: 7.5 HIGH
CVE-2016-5387

The Apache HTTP Server through 2.4.23 follows RFC 3875 section 4.1.18 and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue. NOTE: the vendor states "This mitigation has been assigned the identifier CVE-2016-5387"; in other words, this is not a CVE ID for a vulnerability.

Published: July 18, 2016; 10:00:19 PM -04:00
V3.0: 8.1 HIGH
    V2: 5.1 MEDIUM