CVE-2018-15859

CVSS V2 Low 2.1 CVSS V3 Medium 5.5
Description
Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because lookup failures are mishandled.
Overview
  • CVE ID
  • CVE-2018-15859
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2018-08-25T21:29:02
  • Last Modified Date
  • 2019-08-06T17:15:25
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:xkbcommon:libxkbcommon:*:*:*:*:*:*:*:* 1 OR 0.8.1
cpe:2.3:a:xkbcommon:xkbcommon:*:*:*:*:*:*:*:* 1 OR 0.8.1
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 2.1
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://lists.freedesktop.org/archives/wayland-devel/2018-August/039243.html Mailing List Patch Third Party Advisory
https://github.com/xkbcommon/libxkbcommon/commit/bb4909d2d8fa6b08155e449986a478101e2b2634 Patch Third Party Advisory
https://usn.ubuntu.com/3786-1/ Third Party Advisory
https://security.gentoo.org/glsa/201810-05 Third Party Advisory
https://usn.ubuntu.com/3786-2/ Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2079
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-15859
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15859
History
Created Old Value New Value Data Type Notes
2022-05-10 17:39:29 Added to TrackCVE
2022-12-03 11:28:56 2018-08-25T21:29Z 2018-08-25T21:29:02 CVE Published Date updated
2022-12-03 11:28:56 2019-08-06T17:15:25 CVE Modified Date updated
2022-12-03 11:28:56 Modified Vulnerability Status updated