CVE-2016-4975

MEDIUM NUCLEI

Apache HTTP Server <2.4.24, <2.2.32 - CRLF Injection

Title source: llm

Description

Possible CRLF injection allowing HTTP response splitting attacks for sites which use mod_userdir. This issue was mitigated by changes made in 2.4.25 and 2.2.32 which prohibit CR or LF injection into the "Location" or other outbound header key or value. Fixed in Apache HTTP Server 2.4.25 (Affected 2.4.1-2.4.23). Fixed in Apache HTTP Server 2.2.32 (Affected 2.2.0-2.2.31).

Exploits (1)

github WRITEUP 21 stars

by BlackFan · poc

https://github.com/BlackFan/CVE_PoCs/tree/master/CVE-2016-4975 (Apache httpd)

View Code ZIP pw:eip

Nuclei Templates (1)

Apache mod_userdir CRLF injection

MEDIUMby melbadry9,nadino,xElkomy

Shodan: cpe:"cpe:2.3:a:apache:http_server" || apache 2.4.49

References (24)

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/105093

[Vendor Advisory] https://httpd.apache.org/security/vulnerabilities_22.html#CVE-2016-4975

[Vendor Advisory] https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2016-4975

[Mailing List] https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/re1e3a24664d35bcd0a0e793e0b5fc6ca6c107f99a1b2c545c5d4b467%40%3Ccvs.httpd.apache.org%3E

[Third Party Advisory] https://security.netapp.com/advisory/ntap-20180926-0006/

[Vendor Advisory] https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03908en_us

[Mailing List] https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7500997beb65d6f%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/rb14daf9cc4e28d18cdc15d6a6ca74e565672fabf7ad89541071d008b%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E

... and 4 more

Scores

CVSS v3 6.1

EPSS 0.7301

EPSS Percentile 98.8%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Classification

CWE

CWE-93

Status published

Affected Products (41)

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

apache/http_server

... and 26 more

Timeline

Published Aug 14, 2018

Tracked Since Feb 18, 2026