Iij SEIL/B1 up to 2.30 (PPPAC) improper authentication

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.
3.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Iij SEIL and B1 up to 2.30. It has been rated as problematic. The impacted element is the function (PPPAC). This manipulation causes improper authentication. The identification of this vulnerability is CVE-2009-4409. There is no exploit available.

Detailsinfo

A vulnerability was found in Iij SEIL and B1 up to 2.30. It has been declared as problematic. Affected by this vulnerability is the function (PPPAC). The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect integrity. The summary by CVE is:

The (1) CHAP and (2) MS-CHAP-V2 authentication capabilities in the PPP Access Concentrator (PPPAC) function in Internet Initiative Japan SEIL/B1 firmware 1.00 through 2.52 use the same challenge for each authentication attempt, which allows remote attackers to bypass authentication via a replay attack.

The weakness was shared 12/09/2009 (Website). The advisory is shared at seil.jp. This vulnerability is known as CVE-2009-4409 since 12/23/2009. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 37293†), OSVDB (61118†) and Secunia (SA37628†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Iij

Name

• B1
• SEIL

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/09/2009 🔍
12/09/2009 +0 days 🔍
12/09/2009 +0 days 🔍
12/09/2009 +0 days 🔍
12/11/2009 +1 days 🔍
12/23/2009 +12 days 🔍
12/23/2009 +0 days 🔍
03/18/2015 +1911 days 🔍
12/26/2017 +1014 days 🔍

Sourcesinfo

Advisory: seil.jp
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-4409 (🔍)
GCVE (CVE): GCVE-0-2009-4409
GCVE (VulDB): GCVE-100-51289
SecurityFocus: 37293 - SEIL/B1 PPP Access Concentrator Authentication Bypass Vulnerability
Secunia: 37628 - SEIL Routers PPP Access Concentrator Replay Vulnerability, Less Critical
OSVDB: 61118 - SEIL/B1 Router PPP Access Concentrator (PPPAC) CHAP Authentication Challenge Replay Weakness

Entryinfo

Created: 03/18/2015 15:15
Updated: 12/26/2017 08:48
Changes: 03/18/2015 15:15 (50), 12/26/2017 08:48 (9)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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