SB2018010512 - Cross-site scripting in Shaarli Shaarli

Description

This security bulletin contains information about 1 vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2018-5249)

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in Shaarli before 0.8.5 and 0.9.x before 0.9.3 when processing login form. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security 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.

Remediation

Install update from vendor's website.

References

• https://github.com/shaarli/Shaarli/pull/1046
• https://github.com/shaarli/Shaarli/releases/tag/v0.8.5
• https://github.com/shaarli/Shaarli/releases/tag/v0.9.3