An issue was discovered in the HttpFoundation component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. The PDOSessionHandler class allows storing sessions on a PDO connection. Under some configurations and with a well-crafted payload, it was possible to do a denial of service on a Symfony application without too much resources.
Published 2018-06-13 16:29:01
Updated 2019-03-29 16:22:48
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Denial of service

Exploit prediction scoring system (EPSS) score for CVE-2018-11386

Probability of exploitation activity in the next 30 days: 0.56%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 75 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2018-11386

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
4.3
MEDIUM AV:N/AC:M/Au:N/C:N/I:N/A:P
8.6
2.9
NIST
5.9
MEDIUM CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
2.2
3.6
NIST

CWE ids for CVE-2018-11386

  • According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-11386

Products affected by CVE-2018-11386

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