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certCERTVU:900964
HistoryApr 16, 2004 - 12:00 a.m.

FTE fails to properly validate environment variables

2004-04-1600:00:00
www.kb.cert.org
15

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

0.002

Percentile

60.9%

Overview

FTE contains a vulnerability in the processing of certain environment variables that could allow an attacker to execute arbitrary code.

Description

FTE is a text editor available for a variety of operating systems. There is a buffer overflow vulnerability in the way FTE performs bounds checking on certain environment variables. By supplying an overly long string of characters for the HOME or TERM environment variable, a local user could execute arbitrary code on the system with privileges of the FTE process. Typically, FTE is installed with setuid root privileges.


Impact

A local user could execute arbitrary code with privileges of the FTE process.


Solution

Upgrade

Upgrade to the latest version of FTE as specified by your vendor.


Vendor Information

900964

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Debian __ Affected

Updated: April 16, 2004

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Please refer to Debian Security Advisory DSA 472-1.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23900964 Feedback>).

CVSS Metrics

Group Score Vector
Base
Temporal
Environmental

References

Acknowledgements

This vulnerability was reported by Steve Kemp.

This document was written by Damon Morda.

Other Information

CVE IDs: CVE-2003-0648
Severity Metric: 10.69 Date Public:

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

0.002

Percentile

60.9%