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

Announced

2016-11-22

Revised

2016-11-22 (revision 2)

Access

local, remote

Bugs

#548258

Advisory

https://security.gentoo.org/glsa/201611-20

Affected packages

Package	Arch	Vulnerable	Unaffected
app-admin/testdisk	*	< 7.0-r2	>= 7.0-r2

Background

TestDisk is powerful free data recovery software! It was primarily designed to help recover lost partitions and/or make non-booting disks bootable again when these symptoms are caused by faulty software: certain types of viruses or human error (such as accidentally deleting a Partition Table). Partition table recovery using TestDisk is really easy.

Description

A buffer overflow can be triggered within TestDisk when a malicious disk image is attempting to be recovered.

Impact

A remote attacker could coerce the victim to run TestDisk against their malicious image. This may be leveraged by an attacker to crash TestDisk and gain control of program execution.

Workaround

There is no known workaround at this time.

Resolution

All TestDisk users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/testdisk-7.0-r2"

References

• TestDisk check_OS2MB Stack Buffer overflow