Denial of service in Swagger UI

1) Reachable Assertion

EUVDB-ID: #VU88175

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2024-27983

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion when handling HTTP/2 packets. A remote attacker can send a small amount of HTTP/2 frames packets with a few HTTP/2 frames inside and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Swagger UI: 5.0.0 - 5.13.0

CPE2.3

• cpe:2.3:a:smartbear:swagger_ui:5.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:smartbear:swagger_ui:5.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:smartbear:swagger_ui:5.1.1:*:*:*:*:*:*:*

External links

https://github.com/swagger-api/swagger-ui/releases/tag/v5.14.0

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.