VDB-122890 · CVE-2018-0131 · BID 105074

Cisco IOS/IOS XE RSA-encrypted Nonce inadequate encryption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$5k-$25k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Cisco IOS and IOS XE. This impacts an unknown function of the component RSA-encrypted Nonce Handler. Executing a manipulation can lead to inadequate encryption. This vulnerability is registered as CVE-2018-0131. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability has been found in Cisco IOS and IOS XE (Router Operating System) (unknown version) and classified as problematic. This vulnerability affects an unknown code block of the component RSA-encrypted Nonce Handler. The manipulation with an unknown input leads to a inadequate encryption vulnerability. The CWE definition for the vulnerability is CWE-326. The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required. As an impact it is known to affect confidentiality. CVE summarizes:

A vulnerability in the implementation of RSA-encrypted nonces in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to obtain the encrypted nonces of an Internet Key Exchange Version 1 (IKEv1) session. The vulnerability exists because the affected software responds incorrectly to decryption failures. An attacker could exploit this vulnerability sending crafted ciphertexts to a device configured with IKEv1 that uses RSA-encrypted nonces. A successful exploit could allow the attacker to obtain the encrypted nonces. Cisco Bug IDs: CSCve77140.

The bug was discovered 08/13/2018. The weakness was published 08/14/2018 by Martin (Website). The advisory is available at securityfocus.com. This vulnerability was named CVE-2018-0131 since 11/26/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 05/02/2023). This vulnerability is assigned to T1600 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316306 (Cisco IOS and IOS XE Software Internet Key Exchange Version 1 RSA-Encrypted Nonces Vulnerability(cisco-sa-20180813-rsa-nonce)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105074†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

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

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Inadequate encryption
CWE: CWE-326 / CWE-310
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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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/26/2017 🔍
08/13/2018 +259 days 🔍
08/13/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/15/2018 +1 days 🔍
05/02/2023 +1721 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: securityfocus.com⛔
Researcher: Martin
Status: Not defined

CVE: CVE-2018-0131 (🔍)
GCVE (CVE): GCVE-0-2018-0131
GCVE (VulDB): GCVE-100-122890
SecurityFocus: 105074 - Cisco IOS and IOS XE Software CVE-2018-0131 Information Disclosure Vulnerability
SecurityTracker: 1041539

scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 08/15/2018 06:38
Updated: 05/02/2023 08:50
Changes: 08/15/2018 06:38 (63), 03/15/2020 16:18 (3), 05/02/2023 08:50 (3)
Complete: 🔍
Cache ID: 216::103

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

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