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HTTP Request Smuggling in akka-http-core

Moderate severity GitHub Reviewed Published May 10, 2021 to the GitHub Advisory Database • Updated Feb 21, 2023

Package

maven com.typesafe.akka:akka-http-core (Maven)

Affected versions

>= 10.2.0, < 10.2.4
< 10.1.14

Patched versions

10.2.4
10.1.14

Description

A vulnerable Akka HTTP server will accept a malformed message and hand it over to the user. If the user application proxies this message to another server unchanged and that server also accepts that message but interprets it as two HTTP messages, the second message has reached the second server without having been inspected by the proxy.

References

Published by the National Vulnerability Database Feb 17, 2021
Reviewed Mar 19, 2021
Published to the GitHub Advisory Database May 10, 2021
Last updated Feb 21, 2023

Severity

Moderate

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
Low
Integrity
Low
Availability
None

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:L/I:L/A:N

EPSS score

0.079%
(35th percentile)

Weaknesses

CVE ID

CVE-2021-23339

GHSA ID

GHSA-2w7w-2j92-44hx

Source code

No known source code

Credits

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