CVE-2015-8935

php: HTTP response splitting in header() function

Severity Score

6.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The sapi_header_op function in main/SAPI.c in PHP before 5.4.38, 5.5.x before 5.5.22, and 5.6.x before 5.6.6 supports deprecated line folding without considering browser compatibility, which allows remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer by leveraging (1) %0A%20 or (2) %0D%0A%20 mishandling in the header function.

La función sapi_header_op en main/SAPI en PHP en versiones anteriores a 5.4.38, 5.5.x en versiones anteriores a 5.5.22 y 5.6 en versiones anteriores a 5.6.6 apoya el plegado de linea en de uso sin considerar la compatibilidad del navegador, lo que permite a atacantes remotos llevar a cabo ataques XSS contra Internet Explorer mediante el aprovechamiento de (1) %0A%20 o (2) %0D%0A%20 no manejado adecuadamente en la función de cabecera.

The header() PHP function allowed header stings containing line break followed by a space or tab, as allowed by RFC 2616. Certain browsers handled the continuation line as new header, making it possible to conduct a HTTP response splitting attack against such browsers. The header() function was updated to follow RFC 7230 and not allow any line breaks.

It was discovered that PHP incorrectly handled certain SplMinHeap::compare operations. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-06-21 CVE Reserved
2016-08-02 CVE Published
2024-08-06 CVE Updated
2025-04-04 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

CAPEC

References (9)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2016/06/20/3	2018-01-05
https://github.com/php/php-src/commit/996faf964bba1aec06b153b370a7f20d3dd2bb8b?w=1	2018-01-05

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html	2018-01-05
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00025.html	2018-01-05
http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html	2018-01-05
http://rhn.redhat.com/errata/RHSA-2016-2750.html	2018-01-05
https://bugs.php.net/bug.php?id=68978	2018-01-05
https://access.redhat.com/security/cve/CVE-2015-8935	2016-11-15
https://bugzilla.redhat.com/show_bug.cgi?id=1348927	2016-11-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				<= 5.4.37 Search vendor "Php" for product "Php" and version " <= 5.4.37"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		alpha1		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		alpha2		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		alpha3		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		alpha4		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		alpha5		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		alpha6		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		beta1		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		beta2		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		beta3		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		beta4		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		rc1		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.0 Search vendor "Php" for product "Php" and version "5.5.0"		rc2		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.1 Search vendor "Php" for product "Php" and version "5.5.1"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.2 Search vendor "Php" for product "Php" and version "5.5.2"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.3 Search vendor "Php" for product "Php" and version "5.5.3"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.4 Search vendor "Php" for product "Php" and version "5.5.4"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.5 Search vendor "Php" for product "Php" and version "5.5.5"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.6 Search vendor "Php" for product "Php" and version "5.5.6"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.7 Search vendor "Php" for product "Php" and version "5.5.7"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.8 Search vendor "Php" for product "Php" and version "5.5.8"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.9 Search vendor "Php" for product "Php" and version "5.5.9"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.10 Search vendor "Php" for product "Php" and version "5.5.10"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.11 Search vendor "Php" for product "Php" and version "5.5.11"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.12 Search vendor "Php" for product "Php" and version "5.5.12"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.13 Search vendor "Php" for product "Php" and version "5.5.13"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.14 Search vendor "Php" for product "Php" and version "5.5.14"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.18 Search vendor "Php" for product "Php" and version "5.5.18"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.19 Search vendor "Php" for product "Php" and version "5.5.19"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.20 Search vendor "Php" for product "Php" and version "5.5.20"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.5.21 Search vendor "Php" for product "Php" and version "5.5.21"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.0 Search vendor "Php" for product "Php" and version "5.6.0"		alpha1		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.0 Search vendor "Php" for product "Php" and version "5.6.0"		alpha2		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.0 Search vendor "Php" for product "Php" and version "5.6.0"		alpha3		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.0 Search vendor "Php" for product "Php" and version "5.6.0"		alpha4		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.0 Search vendor "Php" for product "Php" and version "5.6.0"		alpha5		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.0 Search vendor "Php" for product "Php" and version "5.6.0"		beta1		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.0 Search vendor "Php" for product "Php" and version "5.6.0"		beta2		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.0 Search vendor "Php" for product "Php" and version "5.6.0"		beta3		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.0 Search vendor "Php" for product "Php" and version "5.6.0"		beta4		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.1 Search vendor "Php" for product "Php" and version "5.6.1"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.2 Search vendor "Php" for product "Php" and version "5.6.2"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.3 Search vendor "Php" for product "Php" and version "5.6.3"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.4 Search vendor "Php" for product "Php" and version "5.6.4"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				5.6.5 Search vendor "Php" for product "Php" and version "5.6.5"		-		Affected