UbuntuUSN-4854-1AsyncSSH vulnerability
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.6 High
AI Score
Confidence
High
0.003 Low
EPSS
Percentile
71.6%
Releases
- Ubuntu 18.04 ESM
Packages
- python-asyncssh - asyncio-based client and server implementation of SSHv2 protocol
Details
Matthijs Kooijman discovered that AsyncSSH server did not properly handle
authentication under certain conditions. An attacker with a specially
crafted client could use this vulnerability to skip authentication of SSH
sessions.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Ubuntu | 18.04 | noarch | python3-asyncssh | < 1.11.1-1ubuntu0.1~esm1 | UNKNOWN |
| Ubuntu | 18.04 | noarch | python-asyncssh-doc | < 1.11.1-1 | UNKNOWN |
| Ubuntu | 18.04 | noarch | python3-asyncssh | < 1.11.1-1 | UNKNOWN |
References
Related
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.6 High
AI Score
Confidence
High
0.003 Low
EPSS
Percentile
71.6%