high8.1
CVE-2019-18887
Symfony Http-Kernel has non-constant time comparison in UriSigner
Impact
When checking the signature of an URI (an ESI fragment URL for instance), the URISigner did not used a constant time string comparison function, resulting in a potential remote timing attack vulnerability.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | symfony/http-kernel | >= 2.2.0, < 2.8.52 | 2.8.52 |
| composer | symfony/symfony | >= 2.2.0, < 2.8.52 | 2.8.52 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Sensiolabs | Symfony | from 2.8.0 through 2.8.50 from 3.4.0 through 3.4.34 from 4.2.0 through 4.2.11 from 4.3.0 through 4.3.7 |
| Fedoraproject | Fedora | Versions 30, 31 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/symfony/symfony/releases/tag/v4.3.8
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DZNXRVHDQBNZQUCNRVZICPPBFRAUWUJX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VXEAOEANNIVYANTMOJ42NKSU6BGNBULZ/
- https://symfony.com/blog/cve-2019-18887-use-constant-time-comparison-in-urisigner
- https://symfony.com/blog/symfony-4-3-8-released
- https://github.com/advisories/GHSA-q8hg-pf8v-cxrv
- https://nvd.nist.gov/vuln/detail/CVE-2019-18887
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-kernel/CVE-2019-18887.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2019-18887.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DZNXRVHDQBNZQUCNRVZICPPBFRAUWUJX/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VXEAOEANNIVYANTMOJ42NKSU6BGNBULZ/
- https://symfony.com/cve-2019-18887