National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-6133 Detail

Current Description

In PolicyKit (aka polkit) 0.115, the "start time" protection mechanism can be bypassed because fork() is not atomic, and therefore authorization decisions are improperly cached. This is related to lack of uid checking in polkitbackend/polkitbackendinteractiveauthority.c.

Source:  MITRE
Description Last Modified:  01/11/2019
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.7 MEDIUM
Vector: AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 0.8


Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 4.4 MEDIUM
Vector: (AV:L/AC:M/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 3.4


Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
http://www.securityfocus.com/bid/106537 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2019:0230 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0420 Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1692 Mailing List Third Party Advisory
https://git.kernel.org/linus/7b55851367136b1efd84d98fea81ba57a98304cf Patch Third Party Advisory
https://gitlab.freedesktop.org/polkit/polkit/commit/c898fdf4b1aafaa04f8ada9d73d77c8bb76e2f81 Patch Third Party Advisory
https://gitlab.freedesktop.org/polkit/polkit/merge_requests/19 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00021.html Third Party Advisory
https://usn.ubuntu.com/3901-1/ Third Party Advisory
https://usn.ubuntu.com/3901-2/ Third Party Advisory
https://usn.ubuntu.com/3903-1/ Third Party Advisory
https://usn.ubuntu.com/3903-2/ Third Party Advisory
https://usn.ubuntu.com/3908-1/ Third Party Advisory
https://usn.ubuntu.com/3908-2/ Third Party Advisory
https://usn.ubuntu.com/3910-1/ Third Party Advisory
https://usn.ubuntu.com/3910-2/ Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Improper Access Control (CWE-284)

Change History

15 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-6133
NVD Published Date:
01/11/2019
NVD Last Modified:
03/21/2019