Elliptic Curve Cryptography library ECDSA Signature key management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in Elliptic Curve Cryptography library and classified as problematic. The impacted element is an unknown function of the component ECDSA Signature Handler. Performing a manipulation results in key management. This vulnerability is reported as CVE-2018-12438. The attack may be carried out on the physical device. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Elliptic Curve Cryptography library (Software Library) (the affected version unknown). This affects an unknown part of the component ECDSA Signature Handler. The manipulation with an unknown input leads to a key management vulnerability. CWE is classifying the issue as CWE-320. This is going to have an impact on confidentiality. The summary by CVE is:

The Elliptic Curve Cryptography library (aka sunec or libsunec) 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 disclosed 06/15/2018 (Website). The advisory is shared at nccgroup.trust. This vulnerability is uniquely identified as CVE-2018-12438 since 06/14/2018. An attack has to be approached locally. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600.001 for this issue.

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.

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

The entries VDB-119572, VDB-119576, VDB-119578 and VDB-119579 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 2.2
VulDB Temp Score: 2.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.9
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: Key management
CWE: CWE-320
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/13/2018 🔍
06/14/2018 +0 days 🔍
06/14/2018 +0 days 🔍
06/15/2018 +1 days 🔍
06/15/2018 +0 days 🔍
02/19/2020 +614 days 🔍

Sourcesinfo

Advisory: nccgroup.trust
Status: Not defined

CVE: CVE-2018-12438 (🔍)
GCVE (CVE): GCVE-0-2018-12438
GCVE (VulDB): GCVE-100-119577
See also: 🔍

Entryinfo

Created: 06/15/2018 14:04
Updated: 02/19/2020 16:46
Changes: 06/15/2018 14:04 (57), 02/19/2020 16:46 (1)
Complete: 🔍
Cache ID: 216::103

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

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