XSS in Revive-Adserver Revive Adserver
CVE-2020-8115
A reflected XSS vulnerability has been discovered in the publicly accessible afr.php delivery script of Revive Adserver <= 5.0.3 by Jacopo Tediosi. There are currently no known exploits: the session identifier cannot be accessed as it is stored in an http-only cookie as of v3.2.2. On older versions, however, under specific circumstances, it could be possible to steal the session identifier and gain access to the admin interface. The query string sent to the www/delivery/afr.php script was printed back without proper escaping in a JavaScript context, allowing an attacker to execute arbitrary JS code on the browser of the victim.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.071 (93.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Revive-adserver Revive_adserver
- N/a Https://github.com/revive-adserver/revive-adserver — versions Fixed version v5.0.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support@hackerone.com (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
- support@hackerone.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-8115?
- CVE-2020-8115 is a medium-severity vulnerability in Revive-Adserver Revive Adserver, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-02-04.
- How severe is CVE-2020-8115?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-8115 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.