Is CVE-2018-11386 in the CISA KEV catalog?

No. CVE-2018-11386 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-11386?

CVE-2018-11386 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2018-11386?

CVE-2018-11386 has an EPSS score of 1.61% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-11386?

Upgrade symfony on debian 11 to 3.4.12+dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2018-11386

MEDIUMEPSS 73th pctl

5.9

CVSS v3

NVD

Description

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.

CWE-613

How to fix

Remediation Available

symfonyDebian

Fixed in:3.4.12+dfsg-1CVE-2018-11386

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.61%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Vendor Advisory1

symfony.com

Third-Party Advisory1

debian.org

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.