Red Hat Enterprise Linux 7 update for systemd
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2018-15686 CVE-2018-16866 |
| CWE-ID | CWE-264 CWE-125 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software Subscribe |
Red Hat Enterprise Linux for x86_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 Red Hat Enterprise Linux for Power, big endian - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux for IBM z Systems - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux EUS Compute Node Operating systems & Components / Operating system systemd (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Privilege escalation
EUVDB-ID: #VU15675
Risk: Low
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-15686
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
Description
The vulnerability allows a remote attacker to gain elevated privileges on the target system.
The weakness exists due to an error in unit_deserialize of systemd. A remote attacker can supply arbitrary state across systemd re-execution via NotifyAccess and gain root privileges.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux for x86_64 - Extended Update Support: 7.5
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 7.5
Red Hat Enterprise Linux for Power, big endian - Extended Update Support: 7.5
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support: 7.5
systemd (Red Hat package): 219-19.el7 - 219-67.el7
Red Hat Enterprise Linux EUS Compute Node: 7.5
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_x86_64_-_extended_update_support:7.5:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian_-_extended_update_support:7.5:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_big_endian_-_extended_update_support:7.5:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_ibm_z_systems_-_extended_update_support:7.5:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:systemd_redhat_package:219-67.el7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:systemd_redhat_package:219-19.el7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:systemd_redhat_package:219-42.el7_4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_eus_compute_node:7.5:*:*:*:*:red_hat_enterprise_linux:*:
http://access.redhat.com/errata/RHSA-2020:1264
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Out-of-bounds read
EUVDB-ID: #VU16942
Risk: Low
CVSSv3.1: 5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-16866
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to obtain potentially sensitive information on the target system.
The weakness exists due to out-of-bounds read when handling malicious input. A local attacker can run a specially crafted application and access memory processes data.
Install updates from vendor's website.
Red Hat Enterprise Linux for x86_64 - Extended Update Support: 7.5
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 7.5
Red Hat Enterprise Linux for Power, big endian - Extended Update Support: 7.5
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support: 7.5
systemd (Red Hat package): 219-19.el7 - 219-67.el7
Red Hat Enterprise Linux EUS Compute Node: 7.5
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_x86_64_-_extended_update_support:7.5:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian_-_extended_update_support:7.5:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_big_endian_-_extended_update_support:7.5:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_ibm_z_systems_-_extended_update_support:7.5:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:systemd_redhat_package:219-67.el7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:systemd_redhat_package:219-19.el7:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:systemd_redhat_package:219-42.el7_4:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_eus_compute_node:7.5:*:*:*:*:red_hat_enterprise_linux:*:
http://access.redhat.com/errata/RHSA-2020:1264
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. However, proof of concept for this vulnerability is available.
