CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, при специфични условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
Libreswan, via the function RSA_authenticate_hash_signature_raw_rsa(), did not correctly verify the length of the authentication hash when the SIG payload of an IKEv1 packet was encoded using PKCS #1 RSA Encryption as per RFC 2313. A remote attacker can use a variation on the Bleichenbacher attack to forge the SIG payload when small public exponents are being used (e.g., e=3), which could lead to impersonation. Additionally, a remote attacker, by encoding a shorter than expected hash in the SIG payload, could trigger an assertion leading to denial-of-service. The daemon aborts and restarts; continued exploitation causes sustained denial of service. Remote code execution is not possible. X.509 certificate verifications of remote IKE peers are not affected.
Засегнати продукти
- The Libreswan Project libreswan: до 5.3; 5.3.1
Вид слабост
История
- 2 юли 2026 Публикувано
Други уязвимости в The Libreswan Project libreswan
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-50721
- https://nvd.nist.gov/vuln/detail/CVE-2026-50721
- https://libreswan.org/security/CVE-2026-50721/CVE-2026-50721.txt
- https://libreswan.org/security/CVE-2026-50721/
- https://libreswan.org/security/CVE-2026-50722/CVE-2026-50722.txt
- https://www.rfc-editor.org/rfc/rfc2313