Symfony: YAML Parser Exponential Memory Allocation via Recursive Collection-Alias Expansion ("Billion Laughs")
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| symfony | symfony | affected |
|
|||||||||||||||
| symfony | yaml | affected |
|
Configuration 1 [-]
|
No data.
| Vendor | Product | Versions | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Symfony | Symfony |
|
||||||||||||||||||||
| Symfony | Yaml |
|
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-6312-1 | symfony security update |
Debian DSA |
DSA-6317-1 | symfony security update |
Github GHSA |
GHSA-4qpc-3hr4-r2p4 | Symfony's YAML Parser Vulnerable to Exponential Memory Allocation via Recursive Collection-Alias Expansion ("Billion Laughs") |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.684% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Symfony
Symfony symfony Symfony yaml |
|
| Vendors & Products |
Symfony
Symfony symfony Symfony yaml |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, Symfony\Component\Yaml\Parser resolved YAML collection aliases recursively, allowing a small untrusted YAML input to expand into a multi-gigabyte structure and exhaust memory. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12. | |
| Title | Symfony: YAML Parser Exponential Memory Allocation via Recursive Collection-Alias Expansion ("Billion Laughs") | |
| Weaknesses | CWE-776 | |
| References |
|
|
| Metrics |
cvssV4_0
|