CVE-2023-28119 HIGH

CVE-2023-28119: crewjam/saml vulnerable to Denial Of Service Via Deflate Decompression Bomb

Vendor Crewjam
Product saml
Weakness CWE-770 · Uncontrolled resource consumption
Published March 22, 2023
Last update February 25, 2025
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

The crewjam/saml go library contains a partial implementation of the SAML standard in golang. Prior to version 0.4.13, the package's use of `flate.NewReader` does not limit the size of the input. The user can pass more than 1 MB of data in the HTTP request to the processing functions, which will be decompressed server-side using the Deflate algorithm. Therefore, after repeating the same request multiple times, it is possible to achieve a reliable crash since the operating system kills the process. This issue is patched in version 0.4.13.

Key dates

02Disclosure timeline

March 22, 2023 CVE published
February 25, 2025 Record updated