#VU16613 Buffer overflow in Red Hat Enterprise Linux for x86_64 - CVE-2018-5742

Vulnerability identifier: #VU16613

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Red Hat Enterprise Linux for x86_64
Operating systems & Components / Operating system

Vendor: Red Hat Inc.

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

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

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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.