[ASA-202106-13] zint: arbitrary code execution

[Jonas Witschel]

Arch Linux Security Advisory ASA-202106-13
==========================================

Severity: Medium
Date    : 2021-06-01
CVE-ID  : CVE-2021-27799
Package : zint
Type    : arbitrary code execution
Remote  : No
Link    : https://security.archlinux.org/AVG-1625

Summary
=======

The package zint before version 2.9.1-2 is vulnerable to arbitrary code
execution.

Resolution
==========

Upgrade to 2.9.1-2.

# pacman -Syu "zint>=2.9.1-2"

The problem has been fixed upstream but no release is available yet.

Workaround
==========

None.

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

ean_leading_zeroes in backend/upcean.c in Zint Barcode Generator 2.9.1
has a stack-based buffer overflow that is reachable from the C API
through an application that includes the Zint Barcode Generator library
code.

Impact
======

An attacker could execute arbitrary code by supplying crafted input to
generate an EAN barcode.

References
==========

https://bugs.archlinux.org/task/70051
https://sourceforge.net/p/zint/tickets/218/
https://sourceforge.net/p/zint/code/ci/7f8c8114f31c09a986597e0ba63a49f96150368a/
https://security.archlinux.org/CVE-2021-27799
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