vulnwire
7.5high

CVE-2017-9798in critical feed1 exploit

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,…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
7.5
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
94.7%
percentile 100%
Public exploits
1
Exploit-DB

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.

Exploit prediction (EPSS)

94.65% probability of exploitation in the next 30 days, higher than 100% of all scored CVEs.

Exploits and detections

  • EDB-42745 Apache < 2.2.34 / < 2.4.27 - OPTIONS Memory Leak · webapps · 2017-09-18

CVSS scores

Assigned byVersionScoreVector
NVD3.17.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD2.05.0AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Apache Software Foundation Apache HTTP Server

Classification

Weakness
Technology feeds
Apache HTTP Server (RSS, critical only)

References

  • access.redhat.com /errata/RHSA-2017:3113 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • securityfocus.com /bid/100872 · vdb-entry, x_refsource_BID, x_transferred
  • oracle.com /technetwork/security-advisory/cpujul2018-4258247.html · x_refsource_CONFIRM, x_transferred
  • oracle.com /technetwork/security-advisory/cpujan2018-3236628.html · x_refsource_CONFIRM, x_transferred
  • oracle.com /technetwork/security-advisory/cpujan2019-5072801.html · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2017:2882 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2017:2972 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • blog.fuzzing-project.org /uploads/apache-2.2-optionsbleed-backport.patch · x_refsource_MISC, x_transferred
  • support.apple.com /HT208331 · x_refsource_CONFIRM, x_transferred
  • securitytracker.com /id/1039387 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • support.hpe.com /hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2017:3475 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • github.com /hannob/optionsbleed · x_refsource_MISC, x_transferred
  • svn.apache.org /viewvc/httpd/httpd/branches/2.4.x/server/core.c?r1=1805223&r2=1807754&pathrev=1807754&vie · x_refsource_MISC, x_transferred
  • access.redhat.com /errata/RHSA-2017:3240 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2017:3195 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2017:3018 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • oracle.com /technetwork/security-advisory/cpuapr2018-3678067.html · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2017:3239 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2017:3476 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • securityfocus.com /bid/105598 · vdb-entry, x_refsource_BID, x_transferred
  • httpd.apache.org /security/vulnerabilities_24.html#CVE-2017-9798 · x_refsource_CONFIRM, x_transferred
  • oracle.com /technetwork/security-advisory/cpuoct2018-4428296.html · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2017:3114 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2017:3477 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • openwall.com /lists/oss-security/2017/09/18/2 · x_refsource_MISC, x_transferred
  • security.netapp.com /advisory/ntap-20180601-0003/ · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2017:3194 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • security-tracker.debian.org /tracker/CVE-2017-9798 · x_refsource_MISC, x_transferred
  • access.redhat.com /errata/RHSA-2017:3193 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • debian.org /security/2017/dsa-3980 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • blog.fuzzing-project.org /60-Optionsbleed-HTTP-OPTIONS-method-can-leak-Apaches-server-memory.html · x_refsource_MISC, x_transferred
  • exploit-db.com /exploits/42745/ · exploit, x_refsource_EXPLOIT-DB, x_transferred
  • security.gentoo.org /glsa/201710-32 · vendor-advisory, x_refsource_GENTOO, x_transferred
  • oracle.com /technetwork/security-advisory/cpuapr2019-5072813.html · x_refsource_MISC, x_transferred
  • lists.apache.org /thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apach · mailing-list, x_refsource_MLIST, x_transferred
  • lists.apache.org /thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apach · mailing-list, x_refsource_MLIST, x_transferred
  • lists.apache.org /thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apach · mailing-list, x_refsource_MLIST, x_transferred
  • lists.apache.org /thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apach · mailing-list, x_refsource_MLIST, x_transferred
  • tenable.com /security/tns-2019-09 · x_refsource_CONFIRM, x_transferred
  • github.com /apache/httpd/commit/4cc27823899e070268b906ca677ee838d07cf67a · Patch, Vendor Advisory
  • lists.apache.org /thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%40%3Ccvs.httpd.apac
  • lists.apache.org /thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apac
  • lists.apache.org /thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%40%3Ccvs.httpd.apac
  • lists.apache.org /thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apac
  • lists.apache.org /thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apac
  • lists.apache.org /thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apac
  • lists.apache.org /thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apac
  • lists.apache.org /thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apac
  • lists.apache.org /thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apac

Sources

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