Vulnerability identifier: #VU75145

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-2023-26964

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
H2
Universal components / Libraries / Libraries used by multiple products

Vendor: hyperium

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when processing processes HTTP2 RST_STREAM frames. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

H2: 0.1.0 - 0.3.16

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External links
http://github.com/hyperium/hyper/issues/2877
http://github.com/advisories/GHSA-f8vr-r385-rh5r

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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.