XXE in Epubcheck
CVE-2016-9487
EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB files during validation. An attacker who supplies a specially crafted EPUB file may be able to exploit this behavior to read arbitrary files, or have the victim execute arbitrary requests on his behalf, abusing the victim's trust relationship with other entities.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (68.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: -0.000
Affected products
- Epubcheck — versions 4.0.1
- W3 Epubcheck — versions 4.0.1
Weakness classification (CWE)
References
- www.kb.cert.org/vuls/id/779243 (US Government Resource, Third Party Advisory, third-party-advisory)
- www.securityfocus.com/bid/94864/ (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2016-9487?
- CVE-2016-9487 is a high-severity vulnerability in Epubcheck, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.8/10. Published 2018-07-13.
- How severe is CVE-2016-9487?
- High severity. CVSS v3 base score is 7.8 out of 10.