SSH up to 1.2.31 RC4 Encryption improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in SSH up to 1.2.31 and classified as critical. Affected is an unknown function of the component RC4 Encryption. The manipulation results in improper authentication. This vulnerability is identified as CVE-2001-1476. There is not any exploit available. It is suggested to upgrade the affected component. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Detailsinfo

A vulnerability, which was classified as critical, was found in SSH up to 1.2.31 (SSH Server Software). Affected is an unknown code of the component RC4 Encryption. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

SSH before 2.0, with RC4 encryption and the "disallow NULL passwords" option enabled, makes it easier for remote attackers to guess portions of user passwords by replaying user sessions with certain modifications, which trigger different messages depending on whether the guess is correct or not.

The weakness was released 01/18/2001 as confirmed advisory (CERT.org). The advisory is shared for download at kb.cert.org. This vulnerability is traded as CVE-2001-1476 since 04/21/2005. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

Upgrading to version 2.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (6490). Entry connected to this vulnerability is available at VDB-16355. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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: 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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: SSH 2.0

Timelineinfo

01/18/2001 🔍
01/18/2001 +0 days 🔍
04/21/2005 +1554 days 🔍
07/02/2014 +3359 days 🔍
11/17/2024 +3791 days 🔍

Sourcesinfo

Advisory: kb.cert.org
Status: Confirmed

CVE: CVE-2001-1476 (🔍)
GCVE (CVE): GCVE-0-2001-1476
GCVE (VulDB): GCVE-100-16356
CERT: 🔍
X-Force: 6490 - SSH1 using the RC4 cipher could allow attackers to replay SSH session conversations

See also: 🔍

Entryinfo

Created: 07/03/2014 12:59 AM
Updated: 11/17/2024 06:51 AM
Changes: 07/03/2014 12:59 AM (48), 05/29/2018 09:18 AM (6), 11/17/2024 06:51 AM (17)
Complete: 🔍
Cache ID: 244:C80:40

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