Dave Mills ntpd up to 4.0.99k readvar memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Dave Mills ntpd up to 4.0.99k. This issue affects some unknown processing. This manipulation of the argument readvar causes memory corruption. This vulnerability is handled as CVE-2001-0414. Additionally, an exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Dave Mills ntpd up to 4.0.99k (Network Management Software). It has been declared as very critical. Affected by this vulnerability is an unknown functionality. The manipulation of the argument readvar with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long readvar argument.

The weakness was released 04/04/2001 by Przemyslaw Frasunek (Website). The advisory is shared at cisco.com. This vulnerability is known as CVE-2001-0414. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/28/2024).

A public exploit has been developed in ANSI C and been published immediately after the advisory. It is possible to download the exploit at securityfocus.com. It is declared as highly functional. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 14882 (Debian DSA-045-2 : ntpd - remote root exploit), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38253 (Cisco IOS NTP Daemon Buffer Overflow Vulnerability).

Upgrading eliminates this vulnerability. A possible mitigation has been published 5 days after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 312. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 3518.

The vulnerability is also documented in the databases at X-Force (6321), Exploit-DB (16285), Tenable (14882), SecurityFocus (BID 2540†) and OSVDB (805†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Cisco IOS

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 14882
Nessus Name: Debian DSA-045-2 : ntpd - remote root exploit
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 53863
OpenVAS Name: Debian Security Advisory DSA 045-1 (ntp)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ntp_overflow.rb
MetaSploit Name: NTP Daemon readvar Buffer Overflow
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍
Snort ID: 312

Suricata ID: 2100312
Suricata Class: 🔍
Suricata Message: 🔍

TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

SourceFire IPS: 🔍
ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍

Timelineinfo

04/04/2001 🔍
04/04/2001 +0 days 🔍
04/04/2001 +0 days 🔍
04/04/2001 +0 days 🔍
04/09/2001 +5 days 🔍
06/18/2001 +70 days 🔍
09/12/2002 +451 days 🔍
12/11/2002 +89 days 🔍
09/29/2004 +658 days 🔍
07/04/2014 +3565 days 🔍
11/28/2024 +3800 days 🔍

Sourcesinfo

Advisory: cisco.com
Researcher: Przemyslaw Frasunek
Status: Confirmed

CVE: CVE-2001-0414 (🔍)
GCVE (CVE): GCVE-0-2001-0414
GCVE (VulDB): GCVE-100-16801

OVAL: 🔍

X-Force: 6321
SecurityFocus: 2540 - Ntpd Remote Buffer Overflow Vulnerability
OSVDB: 805 - NTP ntpd readvar Variable Remote Overflow
Vulnerability Center: 330 - [cisco-sa-20020508-ntp-vulnerability] Buffer Overflow in Ntpd Ntp Daemon <= 4.0.99k, Critical

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/04/2014 14:14
Updated: 11/28/2024 18:47
Changes: 07/04/2014 14:14 (94), 05/06/2019 10:25 (5), 11/28/2024 18:47 (18)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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