A buffer overflow in NUT might allow remote attackers to execute arbitrary code.

Announced

2012-09-27

Revised

2012-09-27

Access

remote

Bugs

#419377

Advisory

https://security.gentoo.org/glsa/201209-19

Affected packages

Package	Arch	Vulnerable	Unaffected
sys-power/nut	*	< 2.6.3	>= 2.6.3

Background

The Network UPS Tools (NUT) provide support for power devices.

Description

An error in the addchar() function in parseconf.c may cause a buffer overflow.

Impact

A remote attacker could send a specially crafted string to upsd, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All NUT users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-power/nut-2.6.3"

References

• CVE-2012-2944