Vulnerability identifier: #VU75144

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-31394

CWE-ID: CWE-770

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
hyper
Universal components / Libraries / Programming Languages & Components

Vendor: hyperium

Description

The vulnerability allows a remote attacker to perform DoS attack.

The vulnerability exists due to the library does not allow customization of the max_header_list_size method in the H2 third-party software. A remote attacker can send overly large requests to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

hyper: 0.1.0 - 0.14.18

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External links
http://github.com/hyperium/hyper/issues/2826
http://github.com/hyperium/hyper/compare/v0.14.18...v0.14.19
http://github.com/hyperium/hyper/pull/2828

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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.