Executive Summary

Summary
Title tnftp: Arbitrary code execution
Informations
Name GLSA-201611-05 First vendor Publication 2016-11-15
Vendor Gentoo Last vendor Modification 2016-11-15
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

tnftp is vulnerable to remote code execution if output file is not specified.

Background

tnftp is a NetBSD FTP client with several advanced features.

Description

The fetch_url function in usr.bin/ftp/fetch.c allows remote attackers to execute arbitrary commands via a | (pipe) character at the end of an HTTP redirect.

Impact

A remote attacker could possibly execute arbitrary code with the privileges of the process.

Workaround

There is no known workaround at this time.

Resolution

All tnftp users should upgrade to the latest version:


# emerge --sync
# emerge --ask --verbose --oneshot ">=net-ftp/tnftp-20141104"

References

[ 1 ] CVE-2014-8517 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-8517

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/201611-05

Original Source

Url : http://security.gentoo.org/glsa/glsa-201611-05.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-77 Improper Sanitization of Special Elements used in a Command ('Command Injection')

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 4
Os 21

ExploitDB Exploits

id Description
2014-12-02 tnftp - clientside BSD exploit

Snort® IPS/IDS

Date Description
2014-12-16 FreeBSD tnftp fetch_url client side command injection attempt
RuleID : 32524 - Revision : 3 - Type : BROWSER-OTHER
2014-12-16 FreeBSD tnftp fetch_url client side command injection attempt
RuleID : 32523 - Revision : 3 - Type : BROWSER-OTHER

Nessus® Vulnerability Scanner

Date Description
2016-11-15 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201611-05.nasl - Type : ACT_GATHER_INFO
2016-08-12 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_7488378d600711e6a6c314dae9d210b8.nasl - Type : ACT_GATHER_INFO
2015-01-29 Name : The remote host is missing a Mac OS X update that fixes multiple vulnerabilit...
File : macosx_10_10_2.nasl - Type : ACT_GATHER_INFO
2015-01-29 Name : The remote host is missing a Mac OS X update that fixes multiple security iss...
File : macosx_SecUpd2015-001.nasl - Type : ACT_GATHER_INFO
2014-11-12 Name : The remote Fedora host is missing a security update.
File : fedora_2014-14113.nasl - Type : ACT_GATHER_INFO
2014-11-11 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2014-639.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2016-11-16 13:26:22
  • Multiple Updates
2016-11-15 09:23:29
  • First insertion