ID de Prueba:	1.3.6.1.4.1.25623.1.0.112048
Categoría:	Web Servers
Título:	Apache HTTP Server OPTIONS Memory Leak Vulnerability (Optionsbleed) - Active Check
Resumen:	Apache HTTP Server 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.
Descripción:	Summary: Apache HTTP Server 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. Vulnerability Insight: Optionsbleed is a use after free error in the Apache HTTP Server that causes a corrupted Allow header to be constructed in response to HTTP OPTIONS requests. This can leak pieces of arbitrary memory from the server process that may contain secrets. The memory pieces change after multiple requests, so for a vulnerable host an arbitrary number of memory chunks can be leaked. The bug appears if a webmaster tries to use the 'Limit' directive with an invalid HTTP method. Example .htaccess: Vulnerability Impact: The successful exploitation allows the attacker to read chunks of the host's memory. Affected Software/OS: Apache HTTP Server 2.2.x versions up to 2.2.34 and 2.4.x below 2.4.28. Solution: Update to Apache HTTP Server 2.4.28. For Apache HTTP Server running version 2.2.34 apply the patch linked in the references. As a workaround the usage of .htaccess should be disabled competely via the 'AllowOverride None' directive within the webservers configuration. Furthermore all statements within the webserver configuration needs to be verified for invalid HTTP methods. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Referencia Cruzada:	BugTraq ID: 100872 Common Vulnerability Exposure (CVE) ID: CVE-2017-9798 http://www.securityfocus.com/bid/100872 BugTraq ID: 105598 http://www.securityfocus.com/bid/105598 Debian Security Information: DSA-3980 (Google Search) http://www.debian.org/security/2017/dsa-3980 https://www.exploit-db.com/exploits/42745/ https://security.gentoo.org/glsa/201710-32 http://openwall.com/lists/oss-security/2017/09/18/2 https://blog.fuzzing-project.org/60-Optionsbleed-HTTP-OPTIONS-method-can-leak-Apaches-server-memory.html https://blog.fuzzing-project.org/uploads/apache-2.2-optionsbleed-backport.patch https://github.com/apache/httpd/commit/4cc27823899e070268b906ca677ee838d07cf67a https://github.com/hannob/optionsbleed https://security-tracker.debian.org/tracker/CVE-2017-9798 https://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/server/core.c?r1=1805223&r2=1807754&pathrev=1807754&view=patch https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f@%3Ccvs.httpd.apache.org%3E https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d@%3Ccvs.httpd.apache.org%3E RedHat Security Advisories: RHSA-2017:2882 https://access.redhat.com/errata/RHSA-2017:2882 RedHat Security Advisories: RHSA-2017:2972 https://access.redhat.com/errata/RHSA-2017:2972 RedHat Security Advisories: RHSA-2017:3018 https://access.redhat.com/errata/RHSA-2017:3018 RedHat Security Advisories: RHSA-2017:3113 https://access.redhat.com/errata/RHSA-2017:3113 RedHat Security Advisories: RHSA-2017:3114 https://access.redhat.com/errata/RHSA-2017:3114 RedHat Security Advisories: RHSA-2017:3193 https://access.redhat.com/errata/RHSA-2017:3193 RedHat Security Advisories: RHSA-2017:3194 https://access.redhat.com/errata/RHSA-2017:3194 RedHat Security Advisories: RHSA-2017:3195 https://access.redhat.com/errata/RHSA-2017:3195 RedHat Security Advisories: RHSA-2017:3239 https://access.redhat.com/errata/RHSA-2017:3239 RedHat Security Advisories: RHSA-2017:3240 https://access.redhat.com/errata/RHSA-2017:3240 RedHat Security Advisories: RHSA-2017:3475 https://access.redhat.com/errata/RHSA-2017:3475 RedHat Security Advisories: RHSA-2017:3476 https://access.redhat.com/errata/RHSA-2017:3476 RedHat Security Advisories: RHSA-2017:3477 https://access.redhat.com/errata/RHSA-2017:3477 http://www.securitytracker.com/id/1039387
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