Observable Discrepancy
CVE-2019-18887
Summary
An issue was discovered in Symfony 2.8.0 through 2.8.50, 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7. The UriSigner was subject to timing attacks. This is related to symfony/http-kernel. Note that no fixes are provided for Symfony 3.0, 3.1, 3.2, 3.3, 4.0 and 4.1 as they are not maintained anymore.
- HIGH
- NETWORK
- HIGH
- UNCHANGED
- NONE
- NONE
- HIGH
- HIGH
CWE-203 - Observable Discrepancy
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
References
Advisory Timeline
- Published