CVSS: 7.5EPSS: 0%CPEs: 25EXPL: 0CVE-2021-34798 – NULL pointer dereference in httpd core
https://notcve.org/view.php?id=CVE-2021-34798
Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier. Unas peticiones malformadas pueden causar que el servidor haga desreferencia a un puntero NULL. Este problema afecta a Apache HTTP Server versiones 2.4.48 y anteriores A NULL pointer dereference in httpd allows an unauthenticated remote attacker to crash httpd by providing malformed HTTP requests. The highest threat from this vulnerability is to system availability. • http://httpd.apache.org/security/vulnerabilities_24.html https://cert-portal.siemens.com/productcert/pdf/ssa-685781.pdf https://kc.mcafee.com/corporate/index?page=content&id=SB10379 https://lists.apache.org/thread.html/r3925e167d5eb1c75def3750c155d753064e1d34a143028bb32910432%40%3Cusers.httpd.apache.org%3E https://lists.apache.org/thread.html/r61fdbfc26ab170f4e6492ef3bd5197c20b862ce156e9d5a54d4b899c%40%3Cusers.httpd.apache.org%3E https://lists.apache.org/thread.html/r82838efc5fa6fc4c73986399c9b71573589f78b31846aff5bd9b1697%40%3Cusers.httpd.apache.org%3E • CWE-476: NULL Pointer Dereference •
CVSS: 7.2EPSS: 81%CPEs: 20EXPL: 0CVE-2019-10097 – httpd: null-pointer dereference in mod_remoteip
https://notcve.org/view.php?id=CVE-2019-10097
In Apache HTTP Server 2.4.32-2.4.39, when mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY header could trigger a stack buffer overflow or NULL pointer deference. This vulnerability could only be triggered by a trusted proxy and not by untrusted HTTP clients. En Apache HTTP Server versiones 2.4.32 hasta 2.4.39, cuando mod_remoteip se configuró para usar un servidor proxy intermediario de confianza que utiliza el protocolo "PROXY", un encabezado PROXY especialmente diseñado podría desencadenar un desbordamiento del búfer de la pila o una deferencia del puntero NULL. Esta vulnerabilidad solo puede ser activada por un proxy confiable y no por clientes HTTP no confiables. A vulnerability was discovered in Apache httpd, in mod_remoteip. • https://access.redhat.com/errata/RHSA-2019:4126 https://httpd.apache.org/security/vulnerabilities_24.html https://lists.apache.org/thread.html/r03ee478b3dda3e381fd6189366fa7af97c980d2f602846eef935277d%40%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40% • CWE-416: Use After Free CWE-476: NULL Pointer Dereference CWE-787: Out-of-bounds Write •
CVSS: 9.1EPSS: 0%CPEs: 12EXPL: 0CVE-2019-10082 – httpd: read-after-free in h2 connection shutdown
https://notcve.org/view.php?id=CVE-2019-10082
In Apache HTTP Server 2.4.18-2.4.39, using fuzzed network input, the http/2 session handling could be made to read memory after being freed, during connection shutdown. En Apache HTTP Server versiones 2.4.18 hasta 2.4.39, usando la entrada de red difusa, el manejo de la sesión http/2 podría ser hecha para leer la memoria después de ser liberada, durante el apagado de la conexión. A read-after-free vulnerability was discovered in Apache httpd, in mod_http2. A specially crafted http/2 client session could cause the server to read memory that was previously freed during connection shutdown, potentially leading to a crash. • https://httpd.apache.org/security/vulnerabilities_24.html https://lists.apache.org/thread.html/r03ee478b3dda3e381fd6189366fa7af97c980d2f602846eef935277d%40%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E https://lists.apache.org • CWE-416: Use After Free •
CVSS: 4.9EPSS: 0%CPEs: 26EXPL: 0CVE-2019-0197 – httpd: mod_http2: possible crash on late upgrade
https://notcve.org/view.php?id=CVE-2019-0197
A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. Server that never enabled the h2 protocol or that only enabled it for https: and did not set "H2Upgrade on" are unaffected by this issue. Una vulnerabilidad fue encontrada en Apache HTTP Server 2.4.34 hasta 2.4.38 y clasificada como problemática. Cuando se habilitó HTTP / 2 para un http: host o H2Upgrade se habilitó para h2 en un https: host, una solicitud de actualización de http / 1.1 a http / 2 que no fue la primera solicitud en una conexión podría provocar una mala configuración y un fallo. • http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00061.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00084.html http://www.openwall.com/lists/oss-security/2019/04/02/2 http://www.securityfocus.com/bid/107665 https://access.redhat.com/errata/RHSA-2019:3932 https://access.redhat.com/errata/RHSA-2019:3933 https://access.redhat.com/errata/RHSA-2019:3935 https://httpd.apac • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') •
CVSS: 7.5EPSS: 0%CPEs: 24EXPL: 0CVE-2019-0217 – httpd: mod_auth_digest: access control bypass due to race condition
https://notcve.org/view.php?id=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. En Apache HTTP Server 2.4 versión 2.4.38 y anteriores, una condición de carrera en mod_auth_digest cuando se ejecuta en un servidor multihilo podría permitir a un usuario con credenciales válidas autenticarse usando otro nombre de usuario, evitando las restricciones de control de acceso configuradas. A race condition was found in mod_auth_digest when the web server was running in a threaded MPM configuration. It could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions. • http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00061.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00084.html http://www.openwall.com/lists/oss-security/2019/04/02/5 http://www.securityfocus.com/bid/107668 https://access.redhat.com/errata/RHSA-2019:2343 https://access.redhat.com/errata/RHSA-2019:3436 https://access.redhat.com/errata/RHSA-2019:3932 https://access.red • CWE-284: Improper Access Control CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •