wolfSSL up to 3.15.1 ECDSA Signature wolfcrypt/src/ecc.c Key information disclosure

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 (≈)
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in wolfSSL up to 3.15.1. Impacted is an unknown function of the file wolfcrypt/src/ecc.c of the component ECDSA Signature Handler. This manipulation causes information disclosure (Key). This vulnerability is registered as CVE-2018-12436. The attack needs to be launched locally. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as problematic was found in wolfSSL up to 3.15.1. Affected by this vulnerability is an unknown functionality of the file wolfcrypt/src/ecc.c of the component ECDSA Signature Handler. The manipulation with an unknown input leads to a information disclosure vulnerability (Key). The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

wolfcrypt/src/ecc.c in wolfSSL before 3.15.1.patch allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

The bug was discovered 06/13/2018. The weakness was published 06/15/2018 (Website). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2018-12436 since 06/14/2018. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

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 $0-$5k.

Applying a patch is able to eliminate this problem.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.6
VulDB Meta Temp Score: 3.5

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
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

Name: Key
Class: Information disclosure / Key
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

06/13/2018 🔍
06/14/2018 +0 days 🔍
06/14/2018 +0 days 🔍
06/15/2018 +1 days 🔍
06/15/2018 +0 days 🔍
03/27/2023 +1746 days 🔍

Sourcesinfo

Product: github.com

Advisory: 9b9568d500f31f964af26ba8d01e542e1f27e5ca
Status: Not defined

CVE: CVE-2018-12436 (🔍)
GCVE (CVE): GCVE-0-2018-12436
GCVE (VulDB): GCVE-100-119575

Entryinfo

Created: 06/15/2018 14:04
Updated: 03/27/2023 14:24
Changes: 06/15/2018 14:04 (59), 02/19/2020 16:34 (1), 03/27/2023 14:24 (5)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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