Denial of service in Nokogiri

1) Input validation error

EUVDB-ID: #VU69583

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-29181

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input passed into the XML and HTML4 SAX parsers. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nokogiri: 1.4.4 - 1.13.5

External links

http://github.com/sparklemotion/nokogiri/releases/tag/v1.13.6
http://github.com/sparklemotion/nokogiri/security/advisories/GHSA-xh29-r2w5-wx8m
http://github.com/sparklemotion/nokogiri/commit/db05ba9a1bd4b90aa6c76742cf6102a7c7297267
http://securitylab.github.com/advisories/GHSL-2022-031_GHSL-2022-032_Nokogiri/
http://security.gentoo.org/glsa/202208-29

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.