[ASA-202101-34] gptfdisk: arbitrary code execution

[Morten Linderud]

Arch Linux Security Advisory ASA-202101-34
==========================================

Severity: Medium
Date    : 2021-01-20
CVE-ID  : CVE-2021-0308
Package : gptfdisk
Type    : arbitrary code execution
Remote  : No
Link    : https://security.archlinux.org/AVG-1435

Summary
=======

The package gptfdisk before version 1.0.6-1 is vulnerable to arbitrary
code execution.

Resolution
==========

Upgrade to 1.0.6-1.

# pacman -Syu "gptfdisk>=1.0.6-1"

The problem has been fixed upstream in version 1.0.6.

Workaround
==========

None.

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

A security issue was found in GPT fdisk before version 1.0.6. In
ReadLogicalParts of basicmbr.cc, there is a possible out of bounds
write due to a missing bounds check.

Impact
======

A badly formatted MBR disk could execute arbitrary code.

References
==========

https://source.android.com/security/bulletin/2021-01-01#system
https://android.googlesource.com/platform/external/gptfdisk/+/6d369451868ce71618144c4f4bd645ae48f0d1c5%5E!
https://sourceforge.net/p/gptfdisk/code/ci/f523bbc0c2437fe259aa3aff5e819e24101aee29/
https://security.archlinux.org/CVE-2021-0308
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