[arch-security] [ASA-201712-3] libofx: arbitrary code execution

[Morten Linderud]

Arch Linux Security Advisory ASA-201712-3
=========================================

Severity: Medium
Date    : 2017-12-02
CVE-ID  : CVE-2017-2816
Package : libofx
Type    : arbitrary code execution
Remote  : Yes
Link    : https://security.archlinux.org/AVG-534

Summary
=======

The package libofx before version 0.9.12-1 is vulnerable to arbitrary
code execution.

Resolution
==========

Upgrade to 0.9.12-1.

# pacman -Syu "libofx>=0.9.12-1"

The problem has been fixed upstream in version 0.9.12.

Workaround
==========

None.

Description
===========

An exploitable buffer overflow vulnerability exists in the tag parsing
functionality of LibOFX 0.9.11. A specially crafted OFX file can cause
a write out of bounds resulting in a buffer overflow on the stack. An
attacker can construct a malicious OFX file to trigger this
vulnerability.

Impact
======

A remote attacker is able to crash the application, or possibly execute
arbitrary code by providing a crafted file.

References
==========

https://bugs.archlinux.org/task/56539
https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0317
https://github.com/libofx/libofx/commit/a70934eea95c76a7737b83773bffe8738935082d
https://security.archlinux.org/CVE-2017-2816
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