vulnerability
Apache HTTPD: Use-after-free when using Limit with an unrecognized method in .htaccess ("OptionsBleed") (CVE-2017-9798)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Sep 18, 2017 | Sep 22, 2017 | Dec 9, 2024 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
Sep 18, 2017
Added
Sep 22, 2017
Modified
Dec 9, 2024
Description
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.
Solution
apache-httpd-upgrade-latest
References
- URL-http://openwall.com/lists/oss-security/2017/09/18/2
- URL-http://www.debian.org/security/2017/dsa-3980
- URL-http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- URL-http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- URL-http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- URL-http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- URL-http://www.securityfocus.com/bid/100872
- URL-http://www.securityfocus.com/bid/105598
- URL-http://www.securitytracker.com/id/1039387
- URL-https://access.redhat.com/errata/RHSA-2017:2882
- URL-https://access.redhat.com/errata/RHSA-2017:2972
- URL-https://access.redhat.com/errata/RHSA-2017:3018
- URL-https://access.redhat.com/errata/RHSA-2017:3113
- URL-https://access.redhat.com/errata/RHSA-2017:3114
- URL-https://access.redhat.com/errata/RHSA-2017:3193
- URL-https://access.redhat.com/errata/RHSA-2017:3194
- URL-https://access.redhat.com/errata/RHSA-2017:3195
- URL-https://access.redhat.com/errata/RHSA-2017:3239
- URL-https://access.redhat.com/errata/RHSA-2017:3240
- URL-https://access.redhat.com/errata/RHSA-2017:3475
- URL-https://access.redhat.com/errata/RHSA-2017:3476
- URL-https://access.redhat.com/errata/RHSA-2017:3477
- URL-https://blog.fuzzing-project.org/60-Optionsbleed-HTTP-OPTIONS-method-can-leak-Apaches-server-memory.html
- URL-https://blog.fuzzing-project.org/uploads/apache-2.2-optionsbleed-backport.patch
- URL-https://github.com/apache/httpd/commit/4cc27823899e070268b906ca677ee838d07cf67a
- URL-https://github.com/hannob/optionsbleed
- URL-https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2017-9798
- URL-https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3E
- URL-https://security-tracker.debian.org/tracker/CVE-2017-9798
- URL-https://security.gentoo.org/glsa/201710-32
- URL-https://security.netapp.com/advisory/ntap-20180601-0003/
- URL-https://support.apple.com/HT208331
- URL-https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us
- URL-https://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/server/core.c?r1=1805223&r2=1807754&pathrev=1807754&view=patch
- URL-https://www.exploit-db.com/exploits/42745/
- URL-https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- URL-https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
- URL-https://www.tenable.com/security/tns-2019-09
- CVE-2017-9798
- https://attackerkb.com/topics/CVE-2017-9798
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