Privilege escalation in systemd
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-13776 |
| CWE-ID | CWE-20 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
systemd Server applications / Other server solutions |
| Vendor | Freedesktop.org |
Security Bulletin
This security bulletin contains information about 1 vulnerabilities.
Updated: 27.07.2020
Changed bulletin status to patched.
1) Input validation error
EUVDB-ID: #VU29539
Risk: Low
CVSSv3.1: 8.1 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2020-13776
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to systemd 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.
MitigationInstall update from vendor's website.
Vulnerable software versionssystemd: 1 - 245.6
External linkshttp://github.com/systemd/systemd/issues/15985
http://security.netapp.com/advisory/ntap-20200611-0003/
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
