Red Hat Enterprise Linux 8.1 Extended Update Support update for sssd
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-3621 |
| CWE-ID | CWE-77 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support Operating systems & Components / Operating system Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux for ARM 64 - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux for Power, little endian - Extended Update Support Operating systems & Components / Operating system sssd (Red Hat package) Operating systems & Components / Operating system package or component rhel-- (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Command Injection
EUVDB-ID: #VU56000
Risk: Medium
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3621
CWE-ID:
CWE-77 - Command injection
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper input validation in the sssctl command within the logs-fetch and cache-expire subcommands. An attacker can trick the root user into running a specially crafted sssctl command, such as via sudo, and execute arbitrary code with root privileges.
Install updates from vendor's website.
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support: 8.1
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support: 8.1
Red Hat Enterprise Linux for ARM 64 - Extended Update Support: 8.1
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 8.1
sssd (Red Hat package): before 2.2.0-19.el8_1.2
rhel-- (Red Hat package): before 8.1/x86_64/9407/sssd/2.2.0-19.el8_1.2/src/fd431d51/package">sssd-2.2.0-19.el8_1.2
CPE2.3- cpe:2.3:o:red_hat:red hat codeready linux builder for arm 64 - extended update support:8.1:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red hat codeready linux builder for power, little endian - extended update support:8.1:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_arm_64_-_extended_update_support:8.1:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian_-_extended_update_support:8.1:*:*:*:*:red_hat_enterprise_linux:*:
http://access.redhat.com/errata/RHSA-2021:3178
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.
