CVE-2017-2625
Published: 27 July 2018
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.
Notes
Author | Note |
---|---|
tyhicks | 1.1.2 and lower are affected |
Priority
Status
Package | Release | Status |
---|---|---|
libxdmcp Launchpad, Ubuntu, Debian |
artful |
Ignored
(end of life)
|
bionic |
Released
(1:1.1.2-3)
|
|
cosmic |
Ignored
(end of life)
|
|
disco |
Released
(1:1.1.2-3)
|
|
eoan |
Released
(1:1.1.2-3)
|
|
focal |
Released
(1:1.1.2-3)
|
|
groovy |
Released
(1:1.1.2-3)
|
|
hirsute |
Released
(1:1.1.2-3)
|
|
impish |
Released
(1:1.1.2-3)
|
|
jammy |
Released
(1:1.1.2-3)
|
|
kinetic |
Released
(1:1.1.2-3)
|
|
precise |
Ignored
(end of life)
|
|
trusty |
Released
(1:1.1.1-1ubuntu0.1~esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(1:1.1.2-2)
|
|
xenial |
Released
(1:1.1.2-1.1ubuntu0.1~esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
yakkety |
Ignored
(end of life)
|
|
zesty |
Ignored
(end of life)
|
|
Patches: upstream: https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1f upstream: https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=6d1aee0310001eca8f6ded9814a2a70b3a774896 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |