XSS in Thoughtbot Paperclip
CVE-2015-2963
The thoughtbot paperclip gem before 4.2.2 for Ruby does not consider the content-type value during media-type validation, which allows remote attackers to upload HTML documents and conduct cross-site scripting (XSS) attacks via a spoofed value, as demonstrated by image/jpeg.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.021 (81.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/75304 (vdb-entry)
- robots.thoughtbot.com/paperclip-security-release (Vendor Advisory)
- github.com/thoughtbot/paperclip/commit/9aee4112f36058cd28d5fe4a006d6981bd1eda57 (Exploit, Vendor Advisory)
- jvn.jp/en/jp/JVN83881261/index.html (Vendor Advisory, third-party-advisory)
- jvndb.jvn.jp/jvndb/JVNDB-2015-000088 (Vendor Advisory, third-party-advisory)
- openwall.com/lists/oss-security/2015/06/19/3 (Vendor Advisory, mailing-list)
Frequently asked questions
- What is CVE-2015-2963?
- CVE-2015-2963 is a vulnerability in Thoughtbot Paperclip, classified under Cross-site Scripting. Published 2015-07-10.
- Is CVE-2015-2963 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.