#VU66868 Cross-site scripting in sanitize-url - CVE-2021-23648
Vulnerability identifier: #VU66868
Vulnerability risk: Medium
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-79
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
sanitize-url
Web applications /
JS libraries
Vendor: Braintree
Description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in sanitizeUrl() function. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
sanitize-url: 1.0.0 - 5.0.2
External links
https://snyk.io/vuln/SNYK-JS-BRAINTREESANITIZEURL-2339882
https://github.com/braintree/sanitize-url/pull/40
https://github.com/braintree/sanitize-url/pull/40/commits/e5afda45d9833682b705f73fc2c1265d34832183
https://github.com/braintree/sanitize-url/blob/main/src/index.ts%23L11
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2PFW6Q2LXXWTFRTMTRN4ZGADFRQPKJ3D/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HLAQRRGNSO5MYCPAXGPH2OCSHOGHSQMQ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/36GUEPA5TPSC57DZTPYPBL6T7UPQ2FRH/
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.
