Published:2015/06/23  Last Updated:2015/06/23

Symfony vulnerable to code injection


Symfony provided by SensioLabs contains a code injection vulnerability.

Products Affected

  • Symfony 2.0.x, 2.1.x, 2.2.x, 2.3.x, 2.4.x, 2.5.x, 2.6.x


Symfony is an open source web application framework provided by SensioLabs. Symfony contains a code injection vulnerability. Applications with ESI support enabled and using the Symfony built-in reverse proxy (the HttpCache class) are affected.


Arbitrary PHP code may be executed on the server where an application using Symfony resides.


Update the software
Update to the appropriate version according to the information provided by the developer.
This vulnerability has been addressed in Symfony 2.3.27, 2.5.11 and 2.6.6.

Note that Symfony 2.0, 2.1, 2.2 and 2.4 are no longer being developed or supported therefore this issue has not been fixed in these versions.

Vendor Status

Vendor Link
SensioLabs CVE-2015-2308: Esi Code Injection


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2015.06.23 (CVSS Base Metrics)

What is CVSS?

Measures Severity Description
Access Vector(AV) Local (L) Adjacent Network (A) Network (N) A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable".
Access Complexity(AC) High (H) Medium (M) Low (L) The access conditions are somewhat specialized.
Authentication(Au) Multiple (M) Single (S) None (N) Authentication is not required to exploit the vulnerability.
Confidentiality Impact(C) None (N) Partial (P) Complete (C) There is considerable informational disclosure. Access to some system files is possible, but the attacker does not have control over what is obtained, or the scope of the loss is constrained.
Integrity Impact(I) None (N) Partial (P) Complete (C) Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.
Availability Impact(A) None (N) Partial (P) Complete (C) There is reduced performance or interruptions in resource availability.

Base Score:6.8


Takeshi Terada of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2015-2308
JVN iPedia JVNDB-2015-000089