Orta CVSS 5.3
CVE-2026-42772: Openssl: güvenlik açığı
Açıklama (NVD)
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.
Özet bilgiler
- Ürün
- Openssl Openssl
- CVSS v3.1
- 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - EPSS
- %0,50 (yüzdelik 43)
- CWE
- CWE-407
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| openssl-openssl | 3.4.0 | — | 3.4.8 |
| openssl-openssl | 3.5.0 | — | 3.5.9 |
| openssl-openssl | 3.6.0 | — | 3.6.5 |
| openssl-openssl | 4.0.0 | — | 4.0.3 |