PT-2021-15257 · Unknown · Revive Adserver

Alexey Solovyev + 1 · Published 2021-03-25 · Updated 2021-03-27 · CVE-2021-22889

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Revive Adserver versions prior to 5.2.0

Description The issue is related to a reflected XSS vulnerability due to single quotes not being escaped in the statsBreakdown parameter of stats.php, and possibly other scripts. An attacker could trick a user into clicking on a specifically crafted URL and pressing a certain key combination to execute injected JavaScript code.

Recommendations For versions prior to 5.2.0, update to version 5.2.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the stats.php script and avoiding the use of the statsBreakdown parameter until a patch is applied.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-22889

Affected Products

Revive Adserver

References · 8

• 🔥 https://hackerone.com/reports/1097217 · Exploit
• https://github.com/revive-adserver/revive-adserver/commit/2f868414 · Patch
• https://revive-adserver.com/security/revive-sa-2021-003 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-22889 · Security Note
• https://osv.dev/vulnerability/CVE-2021-22889 · Vendor Advisory
• https://t.me/cvenotify/11974 · Telegram Post
• https://t.me/cvenotify/12109 · Telegram Post
• https://t.me/cvenotify/12149 · Telegram Post