VULNERABILITY

Oracle Linux: CVE-2020-13776: ELSA-2021-1611: systemd security, bug fix, and enhancement update (MODERATE) (Multiple Advisories)

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Oracle Linux: CVE-2020-13776: ELSA-2021-1611: systemd security, bug fix, and enhancement update (MODERATE) (Multiple Advisories)

Severity
6
CVSS
(AV:L/AC:H/Au:S/C:C/I:C/A:C)
Published
05/31/2020
Created
05/29/2021
Added
05/26/2021
Modified
11/22/2024

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. A flaw was found in systemd, where it mishandles numerical usernames beginning with decimal digits, or "0x" followed by hexadecimal digits. When the usernames are used by systemd, for example in service units, an unexpected user may be used instead. In some particular configurations, this flaw allows local attackers to elevate their privileges.

Solution(s)

  • oracle-linux-upgrade-systemd
  • oracle-linux-upgrade-systemd-container
  • oracle-linux-upgrade-systemd-devel
  • oracle-linux-upgrade-systemd-journal-remote
  • oracle-linux-upgrade-systemd-libs
  • oracle-linux-upgrade-systemd-pam
  • oracle-linux-upgrade-systemd-tests
  • oracle-linux-upgrade-systemd-udev

References

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