Red Hat update for bind

1) Buffer overflow

EUVDB-ID: #VU16613

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5742

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to boundary error when handling malicious input. A remote unauthenticated attacker can supply specially crafted input, trigger memory corruption and assertion error when debug log level is 10 to cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for x86_64: 5 - 7.0

CPE2.3

• cpe:2.3:o:red_hat:red_hat_enterprise_linux:5:*:*:*:*:*:*:*
• cpe:2.3:o:red_hat:red_hat_enterprise_linux:6:*:*:*:*:*:*:*
• cpe:2.3:o:red_hat:red_hat_enterprise_linux:7.0:*:*:*:*:*:*:*

External links

https://access.redhat.com/security/cve/cve-2018-5742
https://www.openwall.com/lists/oss-security/2018/12/19/6

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.