Описание
In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support, was needed |
| cosmic | ignored | end of life |
| devel | not-affected | 1.9.0-1 |
| disco | ignored | end of life |
| eoan | ignored | end of life |
| esm-apps/bionic | needed | |
| esm-apps/focal | needed | |
| esm-apps/jammy | not-affected | 1.9.0-1 |
| esm-apps/xenial | released | 1.5.0-2ubuntu0.1+esm1 |
| esm-infra-legacy/trusty | released | 1.4.3-2ubuntu0.2+esm2 |
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EPSS
5.8 Medium
CVSS2
8.1 High
CVSS3
Связанные уязвимости
In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.
In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.
In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha2 ...
In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds write in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.
Уязвимость функции kex_method_diffie_hellman_group_exchange_sha256_key_exchange компонента kex.c библиотеки реализации протокола SSH2 Libssh2, позволяющая нарушителю получить доступ к конфиденциальным данным, а также вызвать отказ в обслуживании
EPSS
5.8 Medium
CVSS2
8.1 High
CVSS3