XSS in TYPO3
CVE-2015-5956
The sanitizeLocalUrl function in TYPO3 6.x before 6.2.15, 7.x before 7.4.0, 4.5.40, and earlier allows remote authenticated users to bypass the XSS filter and conduct cross-site scripting (XSS) attacks via a base64 encoded data URI, as demonstrated by the (1) returnUrl parameter to show_rechis.php and the (2) redirect_url parameter to index.php.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 3.5 (Low). Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.020 (80.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- TYPO3 — versions 6.0, 6.0.1, 6.0.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2015-009/ (Vendor Advisory)
- seclists.org/fulldisclosure/2015/Sep/57 (mailing-list)
- www.securitytracker.com/id/1033551 (vdb-entry)
- packetstormsecurity.com/files/133551/Typo3-CMS-6.2.14-4.5.40-Cross-Site-Scripti…
- www.securityfocus.com/archive/1/536464/100/0/threaded (mailing-list)
Frequently asked questions
- What is CVE-2015-5956?
- CVE-2015-5956 is a vulnerability in TYPO3, classified under Cross-site Scripting. Published 2015-09-16.
- Is CVE-2015-5956 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.