Vulnerability Details

Akka HTTP < 10.2.7 DoS Vulnerability

Published: 2021-11-05 06:18:41
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:C

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

severity_origin=NVD

severity_date=2018-11-15 17:07:00 +0000 (Thu, 15 Nov 2018)

Detection Type:
Remote Banner

Solution Type:
Vendor Patch

Summary:
Akka HTTP is prone to a denial of service (DoS) vulnerability.

Detection Method:
Checks if a vulnerable version is present on the target host.

Technical Details:
The HTTP specification allows arbitrary nesting of comment elements in User-Agent and other headers. While parsing a request containing a User-Agent header with deeply nested comments, Akka HTTP may fail with a stack overflow in the parser. Stack overflows are handled as fatal errors in Akka leading to a complete shutdown of the application.

Impact:
An Akka HTTP application server which is exposed to the internet can be remotely crashed by sending a crafted User-Agent header leading to a loss of availability.

Affected Versions:
Akka HTTP prior to version 10.2.7.

Recommendations:
Update to version 10.2.7 or later.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2018-16131

References:

https://doc.akka.io/docs/akka-http/current/security/2021-CVE-2021-42697-stack-overflow-parsing-user-agent.html

Severity
High
CVSS Score
7.8
Published
2021-11-05
Modified
2021-11-08
Category
Denial of Service

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