VDB-11642 · NetBSD-SA2013-012 · OSVDB 101452

NetBSD 5.1/5.2/6.1/6.2 IPv6 Routing Prefix ICMPV6CTL_ND6_PRLIST denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in NetBSD 5.1/5.2/6.1/6.2. This issue affects the function ICMPV6CTL_ND6_PRLIST of the component IPv6 Routing Prefix Handler. Such manipulation leads to denial of service. No exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in NetBSD 5.1/5.2/6.1/6.2 (Operating System) and classified as problematic. Affected by this issue is the function ICMPV6CTL_ND6_PRLIST of the component IPv6 Routing Prefix Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was disclosed 12/19/2013 by Roy Marples as NetBSD-SA2013-012 as confirmed advisory (FTP Server). The advisory is available at ftp.netbsd.org. Local access is required to approach this attack. The successful exploitation needs a simple authentication. Technical details are known, but there is no available exploit. The advisory points out:

Similarly the bug existed in the userland ndp(8) binary, which would dump core when unpacking the list sent by the kernel.

The advisory illustrates:

A simple way to trigger this issue was running the "ndp -p" command on IPv6 enabled kernels that had received router advisories.

Applying a patch is able to eliminate this problem. A possible mitigation has been published before and not just after the disclosure of the vulnerability. The advisory contains the following remark:

For a workaround, disable the ndp binary and don't run other tools that request the prefix list from the kernel until you have fixed your kernel.

The vulnerability is also documented in the vulnerability database at OSVDB (101452†). The entry VDB-11641 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Operating System

Name

NetBSD

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/17/2013 🔍
12/19/2013 +2 days 🔍
12/28/2013 +9 days 🔍
03/24/2019 +1912 days 🔍

Sourcesinfo

Advisory: NetBSD-SA2013-012
Researcher: Roy Marples
Status: Confirmed

GCVE (VulDB): GCVE-100-11642
OSVDB: 101452

See also: 🔍

Entryinfo

Created: 12/28/2013 10:22
Updated: 03/24/2019 08:37
Changes: 12/28/2013 10:22 (46), 03/24/2019 08:37 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.