SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-12171

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.

MEDIUM 6.5EPSS 8.08%

Does this matter?

Lower severity and a low EPSS score (8.08%). Track it; it rarely justifies an emergency change on its own.

Description

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.

CVSS 3.0
6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
8.08% probability · 95th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-284, CWE-20
Affected
redhat/enterprise linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux workstation · apache/http server
Source
secalert@redhat.com
EPSS trend
0%5%10%27 October 2026: 8.08%27 October 202627 October 2026

EPSS 8.1% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.