CVE-2020-13776
Systemd Privilege Escalation through Numerical Usernames
Description
systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082.
INFO
Published Date :
June 3, 2020, 3:15 a.m.
Last Modified :
Nov. 7, 2023, 3:16 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.8
Public PoC/Exploit Available at Github
CVE-2020-13776 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2020-13776
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-13776.
| URL | Resource |
|---|---|
| https://github.com/systemd/systemd/issues/15985 | Issue Tracking Patch Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/ | |
| https://security.netapp.com/advisory/ntap-20200611-0003/ | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Map Vulnerabilities into Different Layers of the Container Image
Python
A command line tool which provides an alternative interface to snyk test
snyk
Makefile Dockerfile Crystal Open Policy Agent
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-13776 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-13776 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/ -
Modified Analysis by [email protected]
Jan. 31, 2022
Action Type Old Value New Value Changed Reference Type https://github.com/systemd/systemd/issues/15985 Third Party Advisory https://github.com/systemd/systemd/issues/15985 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/ Third Party Advisory Removed CWE NIST CWE-20 Added CWE NIST CWE-269 Changed CPE Configuration OR *cpe:2.3:a:freedesktop:systemd:*:*:*:*:*:*:*:* versions up to (including) 245 OR *cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:* versions up to (including) 245 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* -
Modified Analysis by [email protected]
Jan. 31, 2022
Action Type Old Value New Value Changed Reference Type https://github.com/systemd/systemd/issues/15985 Third Party Advisory https://github.com/systemd/systemd/issues/15985 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/ Third Party Advisory Removed CWE NIST CWE-20 Added CWE NIST CWE-269 Changed CPE Configuration OR *cpe:2.3:a:freedesktop:systemd:*:*:*:*:*:*:*:* versions up to (including) 245 OR *cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:* versions up to (including) 245 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 30, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63/ [No Types Assigned] -
Modified Analysis by [email protected]
Jun. 19, 2020
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V2 NIST (AV:L/AC:H/Au:N/C:C/I:C/A:C) Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H Changed Reference Type https://security.netapp.com/advisory/ntap-20200611-0003/ No Types Assigned https://security.netapp.com/advisory/ntap-20200611-0003/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* *cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jun. 11, 2020
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20200611-0003/ [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 04, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/systemd/systemd/issues/15985 No Types Assigned https://github.com/systemd/systemd/issues/15985 Third Party Advisory Added CWE NIST CWE-20 Added CPE Configuration OR *cpe:2.3:a:freedesktop:systemd:*:*:*:*:*:*:*:* versions up to (including) 245
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-13776 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-13776
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.10264
percentile