SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2011-1398

The sapi_header_op function in main/SAPI.c in PHP before 5.3.11 and 5.4.x before 5.4.0RC2 does not check for %0D sequences (aka carriage return characters), which allows remote attackers to bypass an HTTP response-splitting protection mechanism via a…

MEDIUM 4.3EPSS 10.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 10.2%, higher than 95% of all known CVEs. Patch or mitigate before the next change window.

Description

The sapi_header_op function in main/SAPI.c in PHP before 5.3.11 and 5.4.x before 5.4.0RC2 does not check for %0D sequences (aka carriage return characters), which allows remote attackers to bypass an HTTP response-splitting protection mechanism via a crafted URL, related to improper interaction between the PHP header function and certain browsers, as demonstrated by Internet Explorer and Google Chrome.

CVSS 2.0
4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS
10.17% probability · 95th percentile
CISA KEV
Not listed
Weakness
CWE-20
Affected
php/php
Source
cve@mitre.org

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.