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CVE-2023-34451— CometBFT 安全漏洞

一分钟漏洞结论

影响对象
cometbft cometbft
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

CometBFT是一种拜占庭容错 (BFT) 中间件，它采用状态转换机（用任何编程语言编写）并可在许多机器上安全地复制。 CometBFT v0.37.0、 v0.37.1、 v0.34.28之前版本存在安全漏洞，该漏洞源于列表和映射这两个数据结构未保持同步。

CVSS 8.2 · High EPSS 0.90% · P57

可能的 ATT&CK 技术 1 AI

T1498.002 · Reflection Amplification
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一、 漏洞 CVE-2023-34451 基础信息

漏洞信息
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Vulnerability Title
CometBFT may duplicate transactions in the mempool's data structures
来源: CVE Program / CVE List V5
Vulnerability Description
CometBFT is a Byzantine Fault Tolerant (BFT) middleware that takes a state transition machine and replicates it on many machines. The mempool maintains two data structures to keep track of outstanding transactions: a list and a map. These two data structures are supposed to be in sync all the time in the sense that the map tracks the index (if any) of the transaction in the list. In `v0.37.0`, and `v0.37.1`, as well as in `v0.34.28`, and all previous releases of the CometBFT repo2, it is possible to have them out of sync. When this happens, the list may contain several copies of the same transaction. Because the map tracks a single index, it is then no longer possible to remove all the copies of the transaction from the list. This happens even if the duplicated transaction is later committed in a block. The only way to remove the transaction is by restarting the node. The above problem can be repeated on and on until a sizable number of transactions are stuck in the mempool, in order to try to bring down the target node. The problem is fixed in releases `v0.34.29` and `v0.37.2`. Some workarounds are available. Increasing the value of `cache_size` in `config.toml` makes it very difficult to effectively attack a full node. Not exposing the transaction submission RPC's would mitigate the probability of a successful attack, as the attacker would then have to create a modified (byzantine) full node to be able to perform the attack via p2p.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
来源: CVE Program / CVE List V5
Vulnerability Title
CometBFT 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
CometBFT是一种拜占庭容错 (BFT) 中间件，它采用状态转换机（用任何编程语言编写）并可在许多机器上安全地复制。 CometBFT v0.37.0、 v0.37.1、 v0.34.28之前版本存在安全漏洞，该漏洞源于列表和映射这两个数据结构未保持同步。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
cometbft cometbft < 0.34.29 -

二、漏洞 CVE-2023-34451 的公开POC

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三、漏洞 CVE-2023-34451 的情报信息

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CVE-2023-34451 补丁与修复 (2)

CVE-2023-34451 厂商安全公告 (1)

IV. Related Vulnerabilities

Same product: cometbft
Same vendor: cometbft
Same weakness: CWE-401

V. Comments for CVE-2023-34451

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