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),...
- Published
- Aug 30, 2012
- Updated
- Aug 6, 2024
- Assigning CNA
- mitre
- Evidence observed
- Oct 6, 2011
Primary CVSS
nvd · CVSS 2.0
AV:N/AC:M/Au:N/C:N/I:P/A:NModerate · next 30 days
- Percentile
- 95.5%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
1Mr. Tokumaru · php · Oct 6, 2011
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