Описание
A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.
Меры по смягчению последствий
Disable GSSAPIKeyExchange or remove gss-curve25519-sha256- from GSSAPIKexAlgorithms if appropriate.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 8 | libssh | Not affected | ||
| Red Hat Enterprise Linux 9 | libssh | Not affected | ||
| Red Hat Enterprise Linux 10 | libssh | Fixed | RHSA-2026:55855 | 17.08.2026 |
| Red Hat Hardened Images | libssh-main-0.12.1-4.hum1 | Fixed | RHSA-2026:42922 | 21.07.2026 |
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Дополнительная информация
Статус:
EPSS
3.7 Low
CVSS3
Связанные уязвимости
A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.
A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.
A flaw was found in libssh. During server-side GSSAPI key exchange, a ...
EPSS
3.7 Low
CVSS3