CVE-2017-9798 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://openwall.com/lists/oss-security/2017/09/18/2 Mailing List  VDB Entry 
http://www.debian.org/security/2017/dsa-3980 Third Party Advisory 
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html Patch  Third Party Advisory 
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html Patch  Third Party Advisory 
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html Patch  Third Party Advisory 
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html Patch  Third Party Advisory 
http://www.securityfocus.com/bid/100872 Third Party Advisory  VDB Entry 
http://www.securityfocus.com/bid/105598 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1039387 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2017:2882 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:2972 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3018 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3113 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3114 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3193 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3194 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3195 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3239 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3240 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3475 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3476 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2017:3477 Third Party Advisory 
https://blog.fuzzing-project.org/60-Optionsbleed-HTTP-OPTIONS-method-can-leak-Apaches-server-memory.html Exploit  Patch  Technical Description  Third Party Advisory 
https://blog.fuzzing-project.org/uploads/apache-2.2-optionsbleed-backport.patch Exploit  Patch  Technical Description  Third Party Advisory 
https://github.com/apache/httpd/commit/4cc27823899e070268b906ca677ee838d07cf67a Patch  Vendor Advisory 
https://github.com/hannob/optionsbleed Exploit  Third Party Advisory 
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2017-9798 Vendor Advisory 
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba@%3Ccvs.httpd.apache.org%3E Mailing List  Vendor Advisory 
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830@%3Ccvs.httpd.apache.org%3E Mailing List  Vendor Advisory 
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f@%3Ccvs.httpd.apache.org%3E Mailing List  Vendor Advisory 
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53@%3Ccvs.httpd.apache.org%3E Mailing List  Vendor Advisory 
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7@%3Ccvs.httpd.apache.org%3E Mailing List  Vendor Advisory 
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f@%3Ccvs.httpd.apache.org%3E Mailing List  Vendor Advisory 
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234@%3Ccvs.httpd.apache.org%3E Mailing List  Vendor Advisory 
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b@%3Ccvs.httpd.apache.org%3E Mailing List  Vendor Advisory 
https://security-tracker.debian.org/tracker/CVE-2017-9798 Third Party Advisory 
https://security.gentoo.org/glsa/201710-32 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20180601-0003/ Third Party Advisory 
https://support.apple.com/HT208331 Third Party Advisory 
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us Third Party Advisory 
https://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/server/core.c?r1=1805223&r2=1807754&pathrev=1807754&view=patch Vendor Advisory 
https://www.exploit-db.com/exploits/42745/ Exploit  Third Party Advisory  VDB Entry 
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Patch  Third Party Advisory 
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html Patch  Third Party Advisory 
https://www.tenable.com/security/tns-2019-09 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  

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Change History

26 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-9798
NVD Published Date:
09/18/2017
NVD Last Modified:
10/15/2020
Source:
Apache Software Foundation