#VU38009 Input validation error in ox - CVE-2017-15928

Vulnerability identifier: #VU38009

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-15928

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ox
Other software / Other software solutions

Vendor: ohler55 (Peter Ohler)

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

In the Ox gem 2.8.0 for Ruby, the process crashes with a segmentation fault when a crafted input is supplied to parse_obj. NOTE: the vendor has stated "Ox should handle the error more gracefully" but has not confirmed a security implication.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ox: 2.8.0

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External links
https://github.com/ohler55/ox/issues/194
https://rubygems.org/gems/ox/versions/2.8.0

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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.