Vulnerability in Sensiolabs Symfony
CVE-2015-4050
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.082 (94.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.083 · newest: 0.082 · change: -0.001
Affected products
- Sensiolabs Symfony — versions 2.3.19, 2.3.20, 2.3.21
Weakness classification (CWE)
Public proof-of-concept exploits
References
- symfony.com/blog/cve-2015-4050-esi-unauthorized-access (Vendor Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2015-June/159610.html (vendor-advisory)
- www.debian.org/security/2015/dsa-3276 (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2015-June/159603.html (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2015-June/159513.html (vendor-advisory)
- www.securityfocus.com/bid/74928 (vdb-entry)
Frequently asked questions
- What is CVE-2015-4050?
- CVE-2015-4050 is a vulnerability in Sensiolabs Symfony, classified under Improper Access Control. Published 2015-06-02.
- Is CVE-2015-4050 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.