Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2015-4050 |
CWE-ID | CWE-284 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Symfony Web applications / CMS |
Vendor | SensioLabs |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU40728
Risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2015-4050
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to manipulate data.
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.
MitigationInstall update from vendor's website.
Vulnerable software versionsSymfony: 2.3.19 - 2.6.7
External linkshttp://lists.fedoraproject.org/pipermail/package-announce/2015-June/159513.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159603.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159610.html
http://symfony.com/blog/cve-2015-4050-esi-unauthorized-access
http://www.debian.org/security/2015/dsa-3276
http://www.securityfocus.com/bid/74928
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.