Vulnerability identifier: #VU63330

Vulnerability 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-2022-26650

CWE-ID: CWE-185

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ShenYu
Web applications / Other software

Vendor: Apache Foundation

Description

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

The vulnerability exists due to improper input validation when processing untrusted input within the Pattern.matches() function in RegexPredicateJudge.java. A remote attacker can pass specially crafted input to the application and perform regular expression denial of service (ReDoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ShenYu: 2.3.0 - 2.4.2

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External links
http://seclists.org/oss-sec/2022/q2/110
http://github.com/apache/incubator-shenyu/pull/2975

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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.