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CVE-2023-42806— Snapshot signature not including HeadID will allow replay attacks

Quick assessment

Affected
input-output-hk hydra
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Hydra是一款渗透测试工具。 Hydra 0.13.0之前版本存在数据伪造问题漏洞，该漏洞源于允许攻击者通过使用不包括HeadID的快照签名进行重放攻击。

CVSS 6.5 · Medium EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-42806

Vulnerability Information
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Vulnerability Title
Snapshot signature not including HeadID will allow replay attacks
Source: CVE Program / CVE List V5
Vulnerability Description
Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, not signing and verifying `$\mathsf{cid}$` allows an attacker (which must be a participant of this head) to use a snapshot from an old head instance with the same participants to close the head or contest the state with it. This can lead to an incorrect distribution of value (= value extraction attack; hard, but possible) or prevent the head to finalize because the value available is not consistent with the closed utxo state (= denial of service; easy). A patch is planned for version 0.13.0. As a workaround, rotate keys between heads so not to re-use keys and not result in the same multi-signature participants.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Hydra 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hydra是一款渗透测试工具。 Hydra 0.13.0之前版本存在数据伪造问题漏洞，该漏洞源于允许攻击者通过使用不包括HeadID的快照签名进行重放攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
input-output-hk hydra < 0.13.0 -

II. Public POCs for CVE-2023-42806

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III. Intelligence Information for CVE-2023-42806

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Vendor Advisories for CVE-2023-42806 (1)

Other References for CVE-2023-42806 (3)

IV. Related Vulnerabilities

Same product: hydra
Same vendor: input-output-hk
Same weakness: CWE-347

V. Comments for CVE-2023-42806

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