8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:N/A:P
0.003 Low
EPSS
Percentile
68.8%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Alpine | edge-main | noarch | libssh2 | < 1.9.0-r0 | UNKNOWN |
Alpine | 3.10-main | noarch | libssh2 | < 1.9.0-r0 | UNKNOWN |
Alpine | 3.11-main | noarch | libssh2 | < 1.9.0-r0 | UNKNOWN |
Alpine | 3.12-main | noarch | libssh2 | < 1.9.0-r0 | UNKNOWN |
Alpine | 3.13-main | noarch | libssh2 | < 1.9.0-r0 | UNKNOWN |
Alpine | 3.14-main | noarch | libssh2 | < 1.9.0-r0 | UNKNOWN |
Alpine | 3.15-main | noarch | libssh2 | < 1.9.0-r0 | UNKNOWN |
Alpine | 3.16-main | noarch | libssh2 | < 1.9.0-r0 | UNKNOWN |
Alpine | 3.17-main | noarch | libssh2 | < 1.9.0-r0 | UNKNOWN |
Alpine | 3.18-main | noarch | libssh2 | < 1.9.0-r0 | UNKNOWN |
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:N/A:P
0.003 Low
EPSS
Percentile
68.8%