Ethereum RLPx 5 missing cryptographic step

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Ethereum RLPx 5. The impacted element is an unknown function. Such manipulation leads to missing cryptographic step. This vulnerability is referenced as CVE-2015-20112. The attack needs to be initiated within the local network. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Ethereum RLPx 5 and classified as problematic. Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a missing cryptographic step vulnerability. Using CWE to declare the problem leads to CWE-325. The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm. Impacted is confidentiality. CVE summarizes:

RLPx 5 has two CTR streams based on the same key, IV, and nonce. This can facilitate decryption on a private network.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2015-20112 since 06/29/2025. The exploitation is known to be difficult. The attack can only be done within the local network. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

Applying the patch e8cba7283b57280b1bcf5761478f852398365901 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2015-9392). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.2
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.4
CNA Vector (MITRE): 🔒

CVSSv2info

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

Exploitinginfo

Class: Missing cryptographic step
CWE: CWE-325
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

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: e8cba7283b57280b1bcf5761478f852398365901

Timelineinfo

06/29/2025 CVE reserved
06/30/2025 +1 days Advisory disclosed
06/30/2025 +0 days VulDB entry created
06/30/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: 32
Status: Confirmed

CVE: CVE-2015-20112 (🔒)
GCVE (CVE): GCVE-0-2015-20112
GCVE (VulDB): GCVE-100-314420
EUVD: 🔒

Entryinfo

Created: 06/30/2025 08:33
Updated: 06/30/2025 09:24
Changes: 06/30/2025 08:33 (65), 06/30/2025 09:24 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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