CVE-2015-4050 - Improper Access Control

Severity

43%

Complexity

86%

Confidentiality

48%

FragmentListener in the HttpKernel component in Symfony 2.3.19 through 2.3.28, 2.4.9 through 2.4.10, 2.5.4 through 2.5.11, and 2.6.0 through 2.6.7, when ESI or SSI support enabled, does not check if the _controller attribute is set, which allows remote attackers to bypass URL signing and security rules by including (1) no hash or (2) an invalid hash in a request to /_fragment.

FragmentListener in the HttpKernel component in Symfony 2.3.19 through 2.3.28, 2.4.9 through 2.4.10, 2.5.4 through 2.5.11, and 2.6.0 through 2.6.7, when ESI or SSI support enabled, does not check if the _controller attribute is set, which allows remote attackers to bypass URL signing and security rules by including (1) no hash or (2) an invalid hash in a request to /_fragment.

CVSS 2.0 Base Score 4.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N).

Overview

Type

SensioLabs Symfony

First reported 9 years ago

2015-06-02 14:59:00

Last updated 8 years ago

2016-12-31 02:59:00

Affected Software

SensioLabs Symfony 2.3.19

2.3.19

SensioLabs Symfony 2.3.20

2.3.20

SensioLabs Symfony 2.3.21

2.3.21

SensioLabs Symfony 2.3.22

2.3.22

SensioLabs Symfony 2.3.23

2.3.23

SensioLabs Symfony 2.3.24

2.3.24

SensioLabs Symfony 2.3.25

2.3.25

SensioLabs Symfony 2.3.26

2.3.26

SensioLabs Symfony 2.3.27

2.3.27

SensioLabs Symfony 2.3.28

2.3.28

SensioLabs Symfony 2.4.9

2.4.9

SensioLabs Symfony 2.4.10

2.4.10

SensioLabs Symfony 2.5.4

2.5.4

SensioLabs Symfony 2.5.5

2.5.5

SensioLabs Symfony 2.5.6

2.5.6

SensioLabs Symfony 2.5.7

2.5.7

SensioLabs Symfony 2.5.8

2.5.8

SensioLabs Symfony 2.5.9

2.5.9

SensioLabs Symfony 2.5.10

2.5.10

SensioLabs Symfony 2.5.11

2.5.11

SensioLabs Symfony 2.6.0

2.6.0

SensioLabs Symfony 2.6.1

2.6.1

SensioLabs Symfony 2.6.3

2.6.3

SensioLabs Symfony 2.6.4

2.6.4

SensioLabs Symfony 2.6.5

2.6.5

SensioLabs Symfony 2.6.6

2.6.6

SensioLabs Symfony 2.6.7

2.6.7

References

FEDORA-2015-9025

FEDORA-2015-9034

FEDORA-2015-9039

http://symfony.com/blog/cve-2015-4050-esi-unauthorized-access

Vendor Advisory

DSA-3276

74928

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