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Fencer Vulns
medium 6.5

CVE-2017-12171 json

A regression was found in the Red Hat Enterprise Linux 6.9 version of httpd 2.2.15-60, causing comments in the "Allow" and "Deny" configura…

published 2018-07-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-3747

cvss
6.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
8.1%
EPSS 8.1% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

A regression was found in the Red Hat Enterprise Linux 6.9 version of httpd 2.2.15-60, causing comments in the "Allow" and "Deny" configuration lines to be parsed incorrectly. A web administrator could unintentionally allow any client to access a restricted HTTP resource.

Patch / fix

  • httpd RHEL 6 2.2.15-60.el6_9.6
  • mod_ssl RHEL 6 1:2.2.15-60.el6_9.6
  • httpd-tools RHEL 6 2.2.15-60.el6_9.6
  • httpd-manual RHEL 6 2.2.15-60.el6_9.6

red hat advisories RHSA-2017:2972

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-12171 updated cvss 6.5

httpd: # character matches all IPs

  • Red Hat Enterprise Linux Desktop (v. 6) httpd 2.2.15-60.el6_9.6, httpd-tools 2.2.15-60.el6_9.6 Red Hat Enterprise Linux Desktop Optional (v. 6) mod_ssl 2.2.15-60.el6_9.6, httpd-manual 2.2.15-60.el6_9.6 Red Hat Enterprise Linux HPC Node (v. 6) httpd 2.2.15-60.el6_9.6, httpd-tools 2.2.15-60.el6_9.6 Red Hat Enterprise Linux HPC Node Optional (v. 6) mod_ssl 2.2.15-60.el6_9.6, httpd-manual 2.2.15-60.el6_9.6 Red Hat Enterprise Linux Server (v. 6) httpd 2.2.15-60.el6_9.6, mod_ssl 2.2.15-60.el6_9.6, httpd-tools 2.2.15-60.el6_9.6, httpd-manual 2.2.15-60.el6_9.6 Red Hat Enterprise Linux Workstation (v. 6) httpd 2.2.15-60.el6_9.6, mod_ssl 2.2.15-60.el6_9.6, httpd-tools 2.2.15-60.el6_9.6, httpd-manual 2.2.15-60.el6_9.6
    fixed: vendor fix RHSA-2017:2972
  • Red Hat Enterprise Linux 5 httpd Red Hat Enterprise Linux 7 httpd, mod_ssl, mod_ldap, httpd-tools, mod_session, httpd-manual, +1 more Red Hat JBoss Core Services httpd Red Hat JBoss Enterprise Application Platform 5 httpd Red Hat JBoss Enterprise Application Platform 6 httpd, mod_ssl, mod_ldap, httpd-tools, httpd-manual Red Hat JBoss Enterprise Web Server 1 httpd
    +3 more products
    Red Hat JBoss Enterprise Web Server 2 jbcs-httpd24, jbcs-httpd24-runtime Red Hat JBoss Web Server 3 httpd24 Red Hat Software Collections httpd24-httpd, httpd24-mod_md, httpd24-mod_ssl, httpd24-mod_ldap, jbcs-httpd24-httpd, httpd24-httpd-tools, +3 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

8.08% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:P/A:N

Affected products

  • Red Hat httpd

Classification

Weakness
  • CWE-284 Improper Access Control
  • CWE-20 Improper Input Validation
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.