CVE-2023-34188

EUVD-2023-38288
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 29%
Affected Products (NVD)
VendorProductVersion
cesantamongoose
𝑥
< 7.10
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://blog.narfindustries.com/blog/narf-discovers-critical-vulnerabilities-in-cesanta-mongoose-http-server
https://github.com/cesanta/mongoose/commit/4663090a8fb036146dfe77718cff612b0101cb0f
https://github.com/cesanta/mongoose/compare/7.9...7.10
https://github.com/cesanta/mongoose/pull/2197
https://blog.narfindustries.com/blog/narf-discovers-critical-vulnerabilities-in-cesanta-mongoose-http-server
https://github.com/cesanta/mongoose/commit/4663090a8fb036146dfe77718cff612b0101cb0f
https://github.com/cesanta/mongoose/compare/7.9...7.10
https://github.com/cesanta/mongoose/pull/2197
https://security.netapp.com/advisory/ntap-20250228-0001/