CVE-2011-1398

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.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 13.40% Top 10%
Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://openwall.com/lists/oss-security/2012/09/05/15 mailing list
http://security-tracker.debian.org/tracker/CVE-2011-1398
http://www.securitytracker.com/id?1027463 vdb entry
http://secunia.com/advisories/55078 third party advisory
https://bugs.php.net/bug.php?id=60227
http://rhn.redhat.com/errata/RHSA-2013-1307.html vendor advisory
http://openwall.com/lists/oss-security/2012/08/29/5 mailing list
http://lists.opensuse.org/opensuse-security-announce/2013-08/msg00006.html vendor advisory
http://article.gmane.org/gmane.comp.php.devel/70584 mailing list
http://www.ubuntu.com/usn/USN-1569-1 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2011-1398?
CVE-2011-1398 has been scored as a medium severity vulnerability.
How to fix CVE-2011-1398?
To fix CVE-2011-1398, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-1398 being actively exploited in the wild?
It is possible that CVE-2011-1398 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~13% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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