#VU27349 Cross-site scripting in python-markdown2


Published: 2020-04-27 | Updated: 2023-02-13

Vulnerability identifier: #VU27349

Vulnerability risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-11888

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
python-markdown2
Web applications / Modules and components for CMS

Vendor: Trent Mick

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to the element names are mishandled unless a \w+ match succeeds. 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 update from vendor's website.

Vulnerable software versions

python-markdown2: 1.0.1.17 - 2.3.8


External links
http://github.com/trentm/python-markdown2/issues/348


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.


Latest bulletins with this vulnerability