nghttp2 up to 1.40.x HTTP/2 neutralization

Summaryinfo

A vulnerability was found in nghttp2 up to 1.40.x. It has been declared as problematic. This vulnerability affects unknown code of the component HTTP2 Handler. The manipulation results in neutralization. This vulnerability is cataloged as CVE-2020-11080. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in nghttp2 up to 1.40.x. It has been classified as problematic. Affected is some unknown processing of the component HTTP2 Handler. The manipulation with an unknown input leads to a neutralization vulnerability. CWE is classifying the issue as CWE-707. The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read from an upstream component or sent to a downstream component. This is going to have an impact on availability. CVE summarizes:

In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.

The weakness was shared 06/03/2020 (GitHub Repository). The advisory is available at github.com. This vulnerability is traded as CVE-2020-11080 since 03/30/2020. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 1.41.0 eliminates this vulnerability.

The entry VDB-158324 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• nghttp2

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37
• 1.38
• 1.39
• 1.40

Website

• Product: https://github.com/nghttp2/nghttp2/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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