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crewjam/saml vulnerable to Denial Of Service Via Deflate Decompression Bomb

High severity GitHub Reviewed Published Mar 22, 2023 in crewjam/saml • Updated Mar 23, 2023

Package

gomod github.com/crewjam/saml (Go)

Affected versions

< 0.4.13

Patched versions

0.4.13

Description

Our use of flate.NewReader does not limit the size of the input. The user could 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.

References

@crewjam crewjam published to crewjam/saml Mar 22, 2023
Published by the National Vulnerability Database Mar 22, 2023
Published to the GitHub Advisory Database Mar 22, 2023
Reviewed Mar 22, 2023
Last updated Mar 23, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.143%
(51st percentile)

Weaknesses

CVE ID

CVE-2023-28119

GHSA ID

GHSA-5mqj-xc49-246p

Source code

Credits

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