CVE-2015-4050
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.7.0~beta2+dfsg-2 |
| sid | Fixed | 2.7.0~beta2+dfsg-2 |
| forky | Fixed | 2.7.0~beta2+dfsg-2 |
| bullseye | Fixed | 2.7.0~beta2+dfsg-2 |
| bookworm | Fixed | 2.7.0~beta2+dfsg-2 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | symfony/http-kernel | >=2.3.19,<2.3.29 | 2.3.29 |
| Packagist | symfony/http-kernel | >=2.5.4,<2.5.12 | 2.5.12 |
| Packagist | symfony/http-kernel | >=2.6.0,<2.6.8 | 2.6.8 |
| Packagist | symfony/symfony | >=2.3.19,<2.3.29 | 2.3.29 |
| Packagist | symfony/symfony | >=2.4.9,<=2.4.10 | |
| Packagist | symfony/symfony | >=2.5.4,<2.5.12 | 2.5.12 |
| Packagist | symfony/symfony | >=2.6.0,<2.6.8 | 2.6.8 |
| Packagist | symfony/http-kernel | >=2.4.9,<=2.4.10 | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| sensiolabs | symfony | 2.3.19 | |
| sensiolabs | symfony | 2.3.20 | |
| sensiolabs | symfony | 2.3.21 | |
| sensiolabs | symfony | 2.3.22 | |
| sensiolabs | symfony | 2.3.23 | |
| sensiolabs | symfony | 2.3.24 | |
| sensiolabs | symfony | 2.3.25 | |
| sensiolabs | symfony | 2.3.26 | |
| sensiolabs | symfony | 2.3.27 | |
| sensiolabs | symfony | 2.3.28 | |
| sensiolabs | symfony | 2.4.9 | |
| sensiolabs | symfony | 2.4.10 | |
| sensiolabs | symfony | 2.5.4 | |
| sensiolabs | symfony | 2.5.5 | |
| sensiolabs | symfony | 2.5.6 | |
| sensiolabs | symfony | 2.5.7 | |
| sensiolabs | symfony | 2.5.8 | |
| sensiolabs | symfony | 2.5.9 | |
| sensiolabs | symfony | 2.5.10 | |
| sensiolabs | symfony | 2.5.11 | |
| sensiolabs | symfony | 2.6.0 | |
| sensiolabs | symfony | 2.6.1 | |
| sensiolabs | symfony | 2.6.3 | |
| sensiolabs | symfony | 2.6.4 | |
| sensiolabs | symfony | 2.6.5 | |
| sensiolabs | symfony | 2.6.6 | |
| sensiolabs | symfony | 2.6.7 | |
References
- http://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
- https://nvd.nist.gov/vuln/detail/CVE-2015-4050
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-kernel/CVE-2015-4050.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2015-4050.yaml
- https://symfony.com/cve-2015-4050
- https://web.archive.org/web/20200228090443/http://www.securityfocus.com/bid/74928
- https://security-tracker.debian.org/tracker/CVE-2015-4050
CWEs
CWE-284
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.