Red Hat update for patch

1) Improper input validation

EUVDB-ID: #VU11646

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1000156

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists in the EDITOR_PROGRAM invocation due to improper input validation. A remote attacker can send a specially crafted patch file and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux EUS Compute Node: 6.7

Red Hat Enterprise Linux for Power: 6.7

Red Hat Enterprise Linux for IBM z Systems: 6.7

Red Hat Enterprise Linux Server: 6.7

CPE2.3

• cpe:2.3:o:red_hat:red_hat_enterprise_linux_eus_compute_node:6.7:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power:6.7:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_ibm_z_systems:6.7:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:red_hat_enterprise_linux_server:6.7:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2018:2094

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.