85086 : PHP main/SAPI.c sapi_header_op Function %0D Sequence Handling HTTP Response Splitting Protection Bypass
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Timeline

Disclosure Date
2011-11-06

Description

PHP contains a flaw that allows an attacker to bypass protection against HTTP response splitting attacks. This flaw exists because the sapi_header_op function in main/SAPI.c does not properly handle %0D sequences. This may allow an attacker to bypass protection against the insertion of arbitrary HTTP headers, which are included in a response sent to the server. If an application does not properly filter such a request, it could be used to inject additional headers that manipulate cookies, authentication status, or more.

Classification

Location: Remote / Network Access
Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Upgrade
Exploit: Exploit Unknown
Disclosure: Vendor Verified
OSVDB: Web Related

Solution

Upgrade to version 5.3.11 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

The PHP Group
PHP
5.3.10

References

Credit

CVSSv2 Score

CVSSv2 Base Score = 4.3
Source: nvd.nist.gov | Generated: 2012-09-10 | Disagree? | There are 1 more: View All

Access_vector_2 Access_complexity_1 Authentication_2 Confidentiality_impact_0 Integrity_impact_1 Availability_impact_0

Comments

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