PT-2018-4923 · Apache+4 · Apache Http Server+4

Sergey Bobrov · Published 2017-04-12 · Updated 2021-06-06 · CVE-2016-4975

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Apache HTTP Server versions 2.2.0 through 2.2.31 Apache HTTP Server versions 2.4.1 through 2.4.23

Description The issue allows for possible CRLF injection, enabling HTTP response splitting attacks for sites using mod userdir. This was mitigated by changes in versions 2.4.25 and 2.2.32, which prohibit CR or LF injection into the "Location" or other outbound header key or value.

Recommendations For Apache HTTP Server versions 2.2.0 through 2.2.31, update to version 2.2.32 to resolve the issue. For Apache HTTP Server versions 2.4.1 through 2.4.23, update to version 2.4.25 to resolve the issue.

Fix

Weakness Enumeration

CWE-93

Related Identifiers

ALT-PU-2017-1655

CESA-2017_0906

CVE-2016-4975

OPENSUSE-SU-2018_2856-1

RHSA-2017:0906

RHSA-2017_0906

RHSA-2018:2185

RHSA-2018:2186

SUSE-SU-2018:2554-1

SUSE-SU-2018:2815-1

SUSE-SU-2018:2815-2

SUSE-SU-2018_2554-1

SUSE-SU-2018_2815-1

SUSE-SU-2018_2815-2

USN-3279-1

Affected Products

Alt Linux

Apache Http Server

Centos

Red Hat

Suse

References · 82

• https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2016-4975 · Vendor Advisory
• https://errata.altlinux.org/ALT-PU-2017-1655 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4975 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2018:2815-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2017-01804 · Security Note
• https://cve.org/CVERecord?id=CVE-2016-4975 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2016-4975 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-4975 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-4975 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3279-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2017-01806 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2018:2554-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-4975 · Security Note
• https://ubuntu.com/security/CVE-2016-2161 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0736 · Security Note