# CVE-2020-13776: systemd: The systemd packages contain systemd, a system and service manager for Linux, compatible with the SysV and LSB init s...

CVE-2020-13776 is fixed in 8 products on 1 platform, first by RHSA-2021:1611, released May 18, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-13776
- Priority: Routine
- CVSS: 6.7 (Moderate)
- EPSS: 0.0046
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 18, 2021

## Description

The systemd packages contain systemd, a system and service manager for Linux, compatible with the SysV and LSB init scripts. It provides aggressive parallelism capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, and keeps track of processes using Linux cgroups. In addition, it supports snapshotting and restoring of the system state, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. It can also work as a drop-in replacement for sysvinit.  Security Fix(es):  * systemd: Spoofing of XDG_SEAT allows for actions to be checked against "allow_active" instead of "allow_any" (CVE-2019-3842)  * systemd: Mishandles numerical usernames beginning with decimal digits or 0x followed by hexadecimal digits (CVE-2020-13776)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | systemd RHEL 8 | 0:239-45.el8 | [RHSA-2021:1611](https://patchblox.com/security/data/fix/linux/rhsa-2021-1611.md) | May 18, 2021 |
| Linux | systemd ol 8 | 0:239-45.0.1.el8 | [ELSA-2021-1611](https://patchblox.com/security/data/fix/linux/elsa-2021-1611.md) | May 25, 2021 |
| Linux | systemd-container RHEL 8 | 0:239-45.el8 | [RHSA-2021:1611](https://patchblox.com/security/data/fix/linux/rhsa-2021-1611.md) | May 18, 2021 |
| Linux | systemd-container ol 8 | 0:239-45.0.1.el8 | [ELSA-2021-1611](https://patchblox.com/security/data/fix/linux/elsa-2021-1611.md) | May 25, 2021 |
| Linux | systemd-devel RHEL 8 | 0:239-45.el8 | [RHSA-2021:1611](https://patchblox.com/security/data/fix/linux/rhsa-2021-1611.md) | May 18, 2021 |
| Linux | systemd-devel ol 8 | 0:239-45.0.1.el8 | [ELSA-2021-1611](https://patchblox.com/security/data/fix/linux/elsa-2021-1611.md) | May 25, 2021 |
| Linux | systemd-journal-remote RHEL 8 | 0:239-45.el8 | [RHSA-2021:1611](https://patchblox.com/security/data/fix/linux/rhsa-2021-1611.md) | May 18, 2021 |
| Linux | systemd-journal-remote ol 8 | 0:239-45.0.1.el8 | [ELSA-2021-1611](https://patchblox.com/security/data/fix/linux/elsa-2021-1611.md) | May 25, 2021 |
| Linux | systemd-libs RHEL 8 | 0:239-45.el8 | [RHSA-2021:1611](https://patchblox.com/security/data/fix/linux/rhsa-2021-1611.md) | May 18, 2021 |
| Linux | systemd-libs ol 8 | 0:239-45.0.1.el8 | [ELSA-2021-1611](https://patchblox.com/security/data/fix/linux/elsa-2021-1611.md) | May 25, 2021 |
| Linux | systemd-pam RHEL 8 | 0:239-45.el8 | [RHSA-2021:1611](https://patchblox.com/security/data/fix/linux/rhsa-2021-1611.md) | May 18, 2021 |
| Linux | systemd-pam ol 8 | 0:239-45.0.1.el8 | [ELSA-2021-1611](https://patchblox.com/security/data/fix/linux/elsa-2021-1611.md) | May 25, 2021 |
| Linux | systemd-tests RHEL 8 | 0:239-45.el8 | [RHSA-2021:1611](https://patchblox.com/security/data/fix/linux/rhsa-2021-1611.md) | May 18, 2021 |
| Linux | systemd-tests ol 8 | 0:239-45.0.1.el8 | [ELSA-2021-1611](https://patchblox.com/security/data/fix/linux/elsa-2021-1611.md) | May 25, 2021 |
| Linux | systemd-udev RHEL 8 | 0:239-45.el8 | [RHSA-2021:1611](https://patchblox.com/security/data/fix/linux/rhsa-2021-1611.md) | May 18, 2021 |
| Linux | systemd-udev ol 8 | 0:239-45.0.1.el8 | [ELSA-2021-1611](https://patchblox.com/security/data/fix/linux/elsa-2021-1611.md) | May 25, 2021 |

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