CVE-2017-2625

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

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.

References

http://www.securityfocus.com/bid/96480

http://www.securitytracker.com/id/1037919

https://access.redhat.com/errata/RHSA-2017:1865

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625

https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1f

https://security.gentoo.org/glsa/201704-03

https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/

Details

Source: MITRE

Published: 2018-07-27

Updated: 2019-10-09

Type: CWE-320

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Tenable Plugins

View all (17 total)

IDNameProductFamilySeverity
140982EulerOS Virtualization for ARM 64 3.0.6.0 : libXdmcp (EulerOS-SA-2020-2034)NessusHuawei Local Security Checks
medium
131291Debian DLA-2006-1 : libxdmcp security updateNessusDebian Local Security Checks
medium
122987FreeBSD : libXdmcp -- insufficient entropy generating session keys (1b6a10e9-4b7b-11e9-9e89-54e1ad3d6335)NessusFreeBSD Local Security Checks
medium
106579SUSE SLED12 / SLES12 Security Update : libXdmcp (SUSE-SU-2018:0338-1)NessusSuSE Local Security Checks
medium
103070EulerOS 2.0 SP2 : libXpm, libXdmcp, libICE (EulerOS-SA-2017-1212)NessusHuawei Local Security Checks
critical
103069EulerOS 2.0 SP1 : libXpm, libXdmcp, libICE (EulerOS-SA-2017-1211)NessusHuawei Local Security Checks
critical
102740CentOS 7 : libICE / libX11 / libXaw / libXcursor / libXdmcp / libXfixes / libXfont / libXfont2 / etc (CESA-2017:1865)NessusCentOS Local Security Checks
critical
102636Scientific Linux Security Update : X.org X11 libraries on SL7.x x86_64 (20170801)NessusScientific Linux Local Security Checks
critical
102340Oracle Linux 7 : X.org / X11 / libraries (ELSA-2017-1865)NessusOracle Linux Local Security Checks
critical
102147RHEL 7 : X.org X11 libraries (RHSA-2017:1865)NessusRed Hat Local Security Checks
critical
101767SUSE SLES11 Security Update : xorg-x11-libXdmcp (SUSE-SU-2017:1868-1)NessusSuSE Local Security Checks
medium
101766SUSE SLED12 / SLES12 Security Update : libXdmcp (SUSE-SU-2017:1862-1)NessusSuSE Local Security Checks
medium
101569Fedora 26 : libXdmcp (2017-09f65e5e00)NessusFedora Local Security Checks
medium
101286openSUSE Security Update : libXdmcp (openSUSE-2017-789)NessusSuSE Local Security Checks
medium
99276GLSA-201704-03 : X.Org: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
97538Fedora 24 : libXdmcp (2017-bcb1999e65)NessusFedora Local Security Checks
medium
97502Fedora 25 : libXdmcp (2017-9a9328c159)NessusFedora Local Security Checks
medium