PT-2018-5077 · Idpf · Epubcheck

Craig Arendt · Published 2018-07-13 · Updated 2019-10-09 · CVE-2016-9487

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions EpubCheck version 4.0.1

Description The issue allows an attacker to exploit the behavior of EpubCheck when parsing XML in EPUB files during validation, potentially enabling them to read arbitrary files or have the victim execute arbitrary requests on their behalf. This is possible because EpubCheck does not properly restrict resolving external entities.

Recommendations For EpubCheck version 4.0.1, consider disabling the XML parsing functionality for external entities until a patch is available. Restrict access to sensitive files and network resources to minimize the risk of exploitation.

Fix

XXE

Weakness Enumeration

CWE-611

Related Identifiers

CVE-2016-9487

Affected Products

Epubcheck

References · 8

• https://ubuntu.com/security/CVE-2016-9487 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-9487 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2016-9487 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-9487 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-9487 · Security Note
• https://github.com/IDPF/epubcheck/releases/tag/v4.0.2 · Note
• https://kb.cert.org/vuls/id/779243 · Note
• https://securityfocus.com/bid/94864 · Note