CVE-2021-42697

Akka HTTP 10.1.14 - Denial of Service

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Akka HTTP 10.1.x before 10.1.15 and 10.2.x before 10.2.7 can encounter stack exhaustion while parsing HTTP headers, which allows a remote attacker to conduct a Denial of Service attack by sending a User-Agent header with deeply nested comments.

Akka HTTP 10.1.x antes de 10.1.15 y 10.2.x antes de 10.2.7 pueden encontrar agotamiento de la pila mientras analizan las cabeceras HTTP, lo que permite a un atacante remoto llevar a cabo un ataque de denegación de servicio mediante el envío de una cabecera User-Agent con comentarios profundamente anidados

Akka HTTP version 10.1.14 suffers from a denial of service vulnerability.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-10-18 CVE Reserved
2021-11-02 CVE Published
2022-05-11 First Exploit
2024-08-04 CVE Updated
2024-08-28 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-674: Uncontrolled Recursion

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC
https://www.exploit-db.com/exploits/50892	2022-05-11
https://github.com/cxosmo/CVE-2021-42697	2022-06-26
http://packetstormsecurity.com/files/167018/Akka-HTTP-10.1.14-Denial-Of-Service.html	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://akka.io/blog	2022-06-13
https://akka.io/blog/news/2021/11/02/akka-http-10.2.7-released	2022-06-13
https://akka.io/blog/news/2021/11/22/akka-http-10.1.15-released	2022-06-13
https://doc.akka.io/docs/akka-http/current/security/2021-CVE-2021-42697-stack-overflow-parsing-user-agent.html	2022-06-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Akka Search vendor "Akka"		Http Server Search vendor "Akka" for product "Http Server"				>= 10.1.0 < 10.1.15 Search vendor "Akka" for product "Http Server" and version " >= 10.1.0 < 10.1.15"		-		Affected
Akka Search vendor "Akka"		Http Server Search vendor "Akka" for product "Http Server"				>= 10.2.0 < 10.2.7 Search vendor "Akka" for product "Http Server" and version " >= 10.2.0 < 10.2.7"		-		Affected