#VU77337 Buffer overflow in OpenJ9 - CVE-2018-12547

Vulnerability identifier: #VU77337

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-12547

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenJ9
Server applications / Virtualization software

Vendor: Eclipse

Description

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

The vulnerability exists due to the jio_snprintf() and jio_vsnprintf() native methods ignored the length parameter. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenJ9: 0.0M1 - 0.11.0

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External links
https://access.redhat.com/errata/RHSA-2019:0469
https://access.redhat.com/errata/RHSA-2019:0472
https://access.redhat.com/errata/RHSA-2019:0473
https://access.redhat.com/errata/RHSA-2019:0474
https://access.redhat.com/errata/RHSA-2019:0640
https://access.redhat.com/errata/RHSA-2019:1238
https://bugs.eclipse.org/bugs/show_bug.cgi?id=543659

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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.