Multiple vulnerabilities in PHP

Published: 2012-05-24 | Updated: 2020-08-11

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2011-1398 CVE-2012-1172
CWE-ID	CWE-20
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	PHP Universal components / Libraries / Scripting languages
Vendor	PHP Group

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU43654

Risk: Medium

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2011-1398

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PHP: 5.3.0 - 5.3.9

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) Input validation error

EUVDB-ID: #VU44053

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-1172

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.

The file-upload implementation in rfc1867.c in PHP before 5.4.0 does not properly handle invalid [ (open square bracket) characters in name values, which makes it easier for remote attackers to cause a denial of service (malformed $_FILES indexes) or conduct directory traversal attacks during multi-file uploads by leveraging a script that lacks its own filename restrictions.