ALT-PU-2018-2563-1

Package update libssh in branch c8

Version0.7.6-alt2

Published2018-10-25

Max severityCRITICAL

Severity:

Closed issues (3)

CRITICAL9.8

Уязвимость механизма аутентификации серверной части библиотеки libssh, позволяющая нарушителю обойти процедуру аутентификации

Published: 2018-10-19Modified: 2021-03-23

CVSS 3.xCRITICAL 9.8

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0CRITICAL 10.0

CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C

References

CVE-2018-10933

MEDIUM5.9

libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."

Published: 2016-04-13Modified: 2025-04-12

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS 3.xMEDIUM 5.9

CVSS:3.x/CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

CRITICAL9.1

A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access.

Published: 2018-10-17Modified: 2024-11-21

CVSS 2.0MEDIUM 6.4

CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS 3.xCRITICAL 9.1

CVSS:3.x/CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References