DTD parsing stack overflow in Apache Xerces C++ - CVE-2016-4463

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Main Vulnerability Database Vulnerabilities #VU83

DTD parsing stack overflow in Apache Xerces C++ - CVE-2016-4463

Published: July 4, 2016 / Updated: July 5, 2016


Vulnerability identifier: #VU83
CSH Severity: Low
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-4463
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause the target application to crash.

The vulnerability exists due to boundary error when processing DTD files. A remote unauthenticated attacker can cause a stack-based buffer overflow in the xml parser library by creating a specially crafted DTD file.

Successful exploitation of this vulnerability may result in denial of service.

Affected software

Apache Xerces C++
Arch Linux
Debian Linux
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power
Fedora
Sametime
xerces-c27

How to mitigate CVE-2016-4463

The vendor has issued a fix (3.1.4).

xerces-c27 - addressed in versions 2.7.0-28.fc27, 2.7.0-28.fc28, 2.7.0-28.fc29

External References

Related Security Bulletins