SB2021112608 - Multiple vulnerabilities in Apache JSPWiki

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Cross-site scripting (CVE-ID: CVE-2021-40369)

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 the Denounce plugin. 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.

2) Improper access control (CVE-ID: CVE-2021-44140)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote attacker can send a specially crafted HTTP request on logout and delete arbitrary files in a system hosting a JSPWiki instance.

Remediation

Install update from vendor's website.

References

• https://lists.apache.org/thread/r2j00nrnpjgcmoxvlv3pgfoq9kzrcsfh
• https://jspwiki-wiki.apache.org/Wiki.jsp?page=CVE-2021-40369
• https://jspwiki-wiki.apache.org/Wiki.jsp?page=CVE-2021-44140
• https://lists.apache.org/thread/5qglpjdhvobppx7j550lf1sk28f6011t