Stored cross-site scripting in All in One SEO Pack - CVE-2019-16520
Published: October 17, 2019
Vulnerability identifier: #VU21924
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear
CVE-ID: CVE-2019-16520
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Michael Torbert
Affected software:
All in One SEO Pack
All in One SEO Pack
Detailed vulnerability description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to improper encoding of the SEO-specific description for posts provided via unsafe placeholder replacement. A remote authenticated attacker can permanently inject 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.
How to mitigate CVE-2019-16520
Install update from vendor's website.
Sources
- https://github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20190913-04_WordPress_Plugin_All_in_One_SEO_Pack
- https://github.com/semperfiwebdesign/all-in-one-seo-pack/issues/2888
- https://semperplugins.com/all-in-one-seo-pack-changelog/
- https://wordpress.org/plugins/all-in-one-seo-pack/#developers