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CVE-2023-34188

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Date: June 22, 2023

The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests.

Language: C

Severity Score

Related Resources (6)

https://github.com/cesanta/mongoose/compare/7.9...7.10
https://github.com/cesanta/mongoose/commit/4663090a8fb036146dfe77718cff612b0101cb0f
https://blog.narfindustries.com/blog/narf-discovers-critical-vulnerabilities-in-cesanta-mongoose-http-server
https://nvd.nist.gov/vuln/detail/CVE-2023-34188
https://github.com/cesanta/mongoose/pull/2197
https://www.mend.io/vulnerability-database/CVE-2023-34188

Severity Score

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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