CVE-2023-27539

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

09/01/2025

Last modified:

09/01/2025

Description

There is a denial of service vulnerability in the header parsing component of Rack.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x

5.30

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://discuss.rubyonrails.org/t/cve-2023-27539-possible-denial-of-service-vulnerability-in-racks-header-parsing/82466
https://github.com/advisories/GHSA-c6qg-cjj8-47qp
https://github.com/rack/rack/commit/231ef369ad0b542575fb36c74fcfcfabcf6c530c
https://github.com/rack/rack/commit/ee7919ea04303717858be1c3f16b406adc6d8cff
https://lists.debian.org/debian-lts-announce/2023/04/msg00017.html
https://security.netapp.com/advisory/ntap-20231208-0016/
https://www.debian.org/security/2023/dsa-5530