Vulnerability Details : CVE-2016-2161
In Apache HTTP Server versions 2.4.0 to 2.4.23, malicious input to mod_auth_digest can cause the server to crash, and each instance continues to crash even for subsequently valid requests.
Vulnerability category: Input validation
Threat overview for CVE-2016-2161
Top countries where our scanners detected CVE-2016-2161
Top open port discovered on systems with this issue
80
IPs affected by CVE-2016-2161 3,021,418
Threat actors abusing to this issue?
Yes
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affected by CVE-2016-2161!
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Exploit prediction scoring system (EPSS) score for CVE-2016-2161
Probability of exploitation activity in the next 30 days: 2.96%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 90 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2016-2161
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2016-2161
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The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
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The product performs pointer arithmetic on a valid pointer, but it uses an offset that can point outside of the intended range of valid memory locations for the resulting pointer.Assigned by: security@apache.org (Secondary)
References for CVE-2016-2161
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https://security.netapp.com/advisory/ntap-20180423-0001/
December 2016 Apache HTTP Server Vulnerabilities in Multiple NetApp Products | NetApp Product Security
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https://access.redhat.com/errata/RHSA-2017:1414
RHSA-2017:1414 - Security Advisory - Red Hat Customer Portal
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https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234@%3Ccvs.httpd.apache.org%3E
Pony Mail!
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https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f@%3Ccvs.httpd.apache.org%3E
Pony Mail!
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https://www.tenable.com/security/tns-2017-04
[R5] SecurityCenter 5.4.3 Fixes Multiple Vulnerabilities - Security Advisory | Tenable®
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https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a@%3Ccvs.httpd.apache.org%3E
svn commit: r1073140 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html s
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https://security.gentoo.org/glsa/201701-36
Apache: Multiple vulnerabilities (GLSA 201701-36) — Gentoo securityThird Party Advisory
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http://rhn.redhat.com/errata/RHSA-2017-1415.html
RHSA-2017:1415 - Security Advisory - Red Hat Customer Portal
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https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920@%3Ccvs.httpd.apache.org%3E
svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ - Pony Mail
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https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9@%3Ccvs.httpd.apache.org%3E
svn commit: r1075360 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_2
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http://www.securitytracker.com/id/1037508
Apache HTTPD Multiple Flaws Let Remote Users Deny Service, Conduct HTTP Response Splitting Attacks, and Access and Modify Session Data - SecurityTrackerThird Party Advisory;VDB Entry
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https://access.redhat.com/errata/RHSA-2017:1161
RHSA-2017:1161 - Security Advisory - Red Hat Customer Portal
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https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830@%3Ccvs.httpd.apache.org%3E
Pony Mail!
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https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2016-2161
httpd 2.4 vulnerabilities - The Apache HTTP Server ProjectVendor Advisory
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http://www.debian.org/security/2017/dsa-3796
Debian -- Security Information -- DSA-3796-1 apache2
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https://support.apple.com/HT208221
About the security content of macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan - Apple Support
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https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba@%3Ccvs.httpd.apache.org%3E
svn commit: r1048743 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_
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https://lists.apache.org/thread.html/re1e3a24664d35bcd0a0e793e0b5fc6ca6c107f99a1b2c545c5d4b467@%3Ccvs.httpd.apache.org%3E
Pony Mail!
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https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9@%3Ccvs.httpd.apache.org%3E
Pony Mail!
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https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e@%3Ccvs.httpd.apache.org%3E
svn commit: r1073146 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities-httpd.xml security/vulnerabilities_22.html security/vulnerabilities_24.html
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https://lists.apache.org/thread.html/rb14daf9cc4e28d18cdc15d6a6ca74e565672fabf7ad89541071d008b@%3Ccvs.httpd.apache.org%3E
svn commit: r1073149 [10/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ - Pony Mail
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https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d@%3Ccvs.httpd.apache.org%3E
svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_2
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http://www.securityfocus.com/bid/95076
Apache HTTP Server CVE-2016-2161 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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https://access.redhat.com/errata/RHSA-2017:1413
RHSA-2017:1413 - Security Advisory - Red Hat Customer Portal
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https://access.redhat.com/errata/RHSA-2017:0906
RHSA-2017:0906 - Security Advisory - Red Hat Customer Portal
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https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03725en_us
HPESBUX03725 rev.1 - HPE HP-UX Web Server Suite running Apache, Multiple VulnerabilitiesThird Party Advisory
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https://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7500997beb65d6f@%3Ccvs.httpd.apache.org%3E
svn commit: r1073139 [10/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ - Pony Mail
Products affected by CVE-2016-2161
- cpe:2.3:a:apache:http_server:2.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.3:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.6:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.9:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.7:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.8:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.10:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.12:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.14:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.16:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.20:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.21:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.22:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.23:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:2.4.19:*:*:*:*:*:*:*