7.5
HIGH
CVE-2006-6171
ProFTPD CommandBufferSize Buffer Underflow
Description

ProFTPD 1.3.0a and earlier does not properly set the buffer size limit when CommandBufferSize is specified in the configuration file, which leads to an off-by-two buffer underflow. NOTE: in November 2006, the role of CommandBufferSize was originally associated with CVE-2006-5815, but this was an error stemming from a vague initial disclosure. NOTE: ProFTPD developers dispute this issue, saying that the relevant memory location is overwritten by assignment before further use within the affected function, so this is not a vulnerability

INFO

Published Date :

Nov. 30, 2006, 3:28 p.m.

Last Modified :

Nov. 21, 2024, 12:22 a.m.

Remotely Exploitable :

Yes !

Impact Score :

6.4

Exploitability Score :

10.0
Affected Products

The following products are affected by CVE-2006-6171 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Proftpd_project proftpd
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2006-6171.

URL Resource
http://proftp.cvs.sourceforge.net/proftp/proftpd/src/main.c?r1=1.292&r2=1.293&sortby=date Vendor Advisory
http://secunia.com/advisories/23174
http://secunia.com/advisories/23179
http://secunia.com/advisories/23184
http://secunia.com/advisories/23207
http://secunia.com/advisories/23329
http://slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.502491
http://www.debian.org/security/2006/dsa-1218
http://www.debian.org/security/2006/dsa-1222
http://www.gentoo.org/security/en/glsa/glsa-200611-26.xml
http://www.mandriva.com/security/advisories?name=MDKSA-2006:217-1
http://www.openpkg.com/security/advisories/OpenPKG-SA-2006.035.html
http://www.trustix.org/errata/2006/0070
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=214820 Vendor Advisory
http://proftp.cvs.sourceforge.net/proftp/proftpd/src/main.c?r1=1.292&r2=1.293&sortby=date Vendor Advisory
http://secunia.com/advisories/23174
http://secunia.com/advisories/23179
http://secunia.com/advisories/23184
http://secunia.com/advisories/23207
http://secunia.com/advisories/23329
http://slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.502491
http://www.debian.org/security/2006/dsa-1218
http://www.debian.org/security/2006/dsa-1222
http://www.gentoo.org/security/en/glsa/glsa-200611-26.xml
http://www.mandriva.com/security/advisories?name=MDKSA-2006:217-1
http://www.openpkg.com/security/advisories/OpenPKG-SA-2006.035.html
http://www.trustix.org/errata/2006/0070
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=214820 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2006-6171 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2006-6171 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    Aug. 07, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 17, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Apr. 11, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Mar. 21, 2024

    Action Type Old Value New Value
    Added Tag MITRE disputed
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Description ** DISPUTED ** ProFTPD 1.3.0a and earlier does not properly set the buffer size limit when CommandBufferSize is specified in the configuration file, which leads to an off-by-two buffer underflow. NOTE: in November 2006, the role of CommandBufferSize was originally associated with CVE-2006-5815, but this was an error stemming from a vague initial disclosure. NOTE: ProFTPD developers dispute this issue, saying that the relevant memory location is overwritten by assignment before further use within the affected function, so this is not a vulnerability. ProFTPD 1.3.0a and earlier does not properly set the buffer size limit when CommandBufferSize is specified in the configuration file, which leads to an off-by-two buffer underflow. NOTE: in November 2006, the role of CommandBufferSize was originally associated with CVE-2006-5815, but this was an error stemming from a vague initial disclosure. NOTE: ProFTPD developers dispute this issue, saying that the relevant memory location is overwritten by assignment before further use within the affected function, so this is not a vulnerability
  • Initial Analysis by [email protected]

    Nov. 30, 2006

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2006-6171 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2006-6171 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.56 }} -0.00%

score

0.85876

percentile

CVSS2 - Vulnerability Scoring System
Access Vector
Access Complexity
Authentication
Confidentiality
Integrity
Availability