2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
6.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
0.0004 Low
EPSS
Percentile
5.1%
It was discovered that libXdmcp before 1.1.2 including used weak entropy to
generate session keys. On a multi-user system using xdmcp, a local attacker
could potentially use information available from the process list to brute
force the key, allowing them to hijack other users’ sessions.
Author | Note |
---|---|
tyhicks | 1.1.2 and lower are affected |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | libxdmcp | < 1:1.1.2-3 | UNKNOWN |
ubuntu | 19.04 | noarch | libxdmcp | < 1:1.1.2-3 | UNKNOWN |
ubuntu | 19.10 | noarch | libxdmcp | < 1:1.1.2-3 | UNKNOWN |
ubuntu | 20.04 | noarch | libxdmcp | < 1:1.1.2-3 | UNKNOWN |
ubuntu | 20.10 | noarch | libxdmcp | < 1:1.1.2-3 | UNKNOWN |
ubuntu | 21.04 | noarch | libxdmcp | < 1:1.1.2-3 | UNKNOWN |
ubuntu | 21.10 | noarch | libxdmcp | < 1:1.1.2-3 | UNKNOWN |
ubuntu | 22.04 | noarch | libxdmcp | < 1:1.1.2-3 | UNKNOWN |
ubuntu | 22.10 | noarch | libxdmcp | < 1:1.1.2-3 | UNKNOWN |
ubuntu | 14.04 | noarch | libxdmcp | < 1:1.1.1-1ubuntu0.1~esm1 | UNKNOWN |
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
6.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
0.0004 Low
EPSS
Percentile
5.1%