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CVE-2022-23507— Light client verification not taking into account chain ID

Quick assessment

Affected
informalsystems tendermint-rs
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.

Tendermint是美国Tendermint公司的一款Byzantine Fault Tolerant (BFT) 式中间件。 Tendermint 0.28.0之前版本存在数据伪造问题漏洞，该漏洞源于包含通过不正确的加密签名验证进行的潜在攻击，影响任何使用 tendermint-light-client 和相关软件包执行轻客户端验证的人，攻击者利用该漏洞可以欺骗轻客户端。

CVSS 5.4 · Medium EPSS 0.30% · P22
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I. Basic Information for CVE-2022-23507

Vulnerability Information
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Vulnerability Title
Light client verification not taking into account chain ID
Source: CVE Program / CVE List V5
Vulnerability Description
Tendermint is a high-performance blockchain consensus engine for Byzantine fault tolerant applications. Versions prior to 0.28.0 contain a potential attack via Improper Verification of Cryptographic Signature, affecting anyone using the tendermint-light-client and related packages to perform light client verification (e.g. IBC-rs, Hermes). The light client does not check that the chain IDs of the trusted and untrusted headers match, resulting in a possible attack vector where someone who finds a header from an untrusted chain that satisfies all other verification conditions (e.g. enough overlapping validator signatures) could fool a light client. The attack vector is currently theoretical, and no proof-of-concept exists yet to exploit it on live networks. This issue is patched in version 0.28.0. There are no workarounds.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
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
Tendermint 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tendermint是美国Tendermint公司的一款Byzantine Fault Tolerant (BFT) 式中间件。 Tendermint 0.28.0之前版本存在数据伪造问题漏洞，该漏洞源于包含通过不正确的加密签名验证进行的潜在攻击，影响任何使用 tendermint-light-client 和相关软件包执行轻客户端验证的人，攻击者利用该漏洞可以欺骗轻客户端。
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
informalsystems tendermint-rs 0.28.0 -

II. Public POCs for CVE-2022-23507

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III. Intelligence Information for CVE-2022-23507

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Vendor Advisories for CVE-2022-23507 (1)

IV. Related Vulnerabilities

Same weakness: CWE-347

V. Comments for CVE-2022-23507

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