#VU20906 NULL pointer dereference in Oniguruma - CVE-2019-13225

Vulnerability identifier: #VU20906

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-13225

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Oniguruma
Universal components / Libraries / Libraries used by multiple products

Vendor: K.Kosako

Description

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

The vulnerability exists due to a NULL pointer dreference error in match_at() function  in regcomp.c in Oniguruma library. A remote attacker can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Oniguruma: 6.7.0 - 6.9.2

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External links
https://github.com/kkos/oniguruma/commit/c509265c5f6ae7264f7b8a8aae1cfa5fc59d108c

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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.