CVSS 5.3 · Medium EPSS 0,33%
Kerentanan Inefficient Algorithmic Complexity pada openssl. Skor CVSS 3.1 5.3 (Medium) menurut CISA ADP.
Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream data. Impact summary: A remote QUIC peer that completes the handshake can create a connection-scoped CPU pressure and potentially a Denial of Service using compliant STREAM frames inside the advertised receive window, with low attacker bandwidth. CWE: CWE-407: Inefficient Algorithmic Complexity Description: OpenSSL manages received QUIC stream fragments using a doubly-linked list. While it optimizes for append operations (at the end of the list), it falls back to a head-to-tail linear search for any fragment that does not immediately follow the current `tail`. By manipulating the sequence of offsets, an attacker can force the server to perform O(n^2) operations, consuming excessive CPU time for the QUIC process. FIPS impact: no The FIPS module is not affected as the QUIC implementation is outside of the OpenSSL FIPS module boundary.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| openssl | openssl | Versi 3.4.0 hingga sebelum 3.4.8 |
| openssl | openssl | Versi 3.5.0 hingga sebelum 3.5.9 |
| openssl | openssl | Versi 3.6.0 hingga sebelum 3.6.5 |
| openssl | openssl | Versi 4.0.0 hingga sebelum 4.0.3 |