漏洞信息(CVE-2024-31497)

一、漏洞 CVE-2024-31497 基础信息

漏洞信息

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漏洞标题

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来源：美国国家漏洞数据库 NVD

漏洞描述信息

In PuTTY 0.68 through 0.80 before 0.81, biased ECDSA nonce generation allows an attacker to recover a user's NIST P-521 secret key via a quick attack in approximately 60 signatures. This is especially important in a scenario where an adversary is able to read messages signed by PuTTY or Pageant. The required set of signed messages may be publicly readable because they are stored in a public Git service that supports use of SSH for commit signing, and the signatures were made by Pageant through an agent-forwarding mechanism. In other words, an adversary may already have enough signature information to compromise a victim's private key, even if there is no further use of vulnerable PuTTY versions. After a key compromise, an adversary may be able to conduct supply-chain attacks on software maintained in Git. A second, independent scenario is that the adversary is an operator of an SSH server to which the victim authenticates (for remote login or file copy), even though this server is not fully trusted by the victim, and the victim uses the same private key for SSH connections to other services operated by other entities. Here, the rogue server operator (who would otherwise have no way to determine the victim's private key) can derive the victim's private key, and then use it for unauthorized access to those other services. If the other services include Git services, then again it may be possible to conduct supply-chain attacks on software maintained in Git. This also affects, for example, FileZilla before 3.67.0, WinSCP before 6.3.3, TortoiseGit before 2.15.0.1, and TortoiseSVN through 1.14.6.

来源：美国国家漏洞数据库 NVD

CVSS信息

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来源：美国国家漏洞数据库 NVD

漏洞类别

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来源：美国国家漏洞数据库 NVD

漏洞标题

PuTTY 安全漏洞

来源：中国国家信息安全漏洞库 CNNVD

漏洞描述信息

PuTTY是Simon Tatham个人开发者的一套免费的Telnet、Rlogin和SSH客户端软件。该软件主要用于对Linux系统进行远程管理。 PuTTY 0.68版本至0.80版本存在安全漏洞，该漏洞源于存在有偏差的随机数生成，允许攻击者通过快速攻击来恢复用户的NIST P-521密钥。

来源：中国国家信息安全漏洞库 CNNVD

CVSS信息

N/A

来源：中国国家信息安全漏洞库 CNNVD

漏洞类别

其他

来源：中国国家信息安全漏洞库 CNNVD

二、漏洞 CVE-2024-31497 的公开POC

#	POC 描述	源链接	神龙链接
1	A script designed to uncover vulnerabilities in Putty by exploiting CVE-2024-31497.	https://github.com/sh1k4ku/CVE-2024-31497	POC详情
2	None	https://github.com/edutko/cve-2024-31497	POC详情
3	Proof Of Concept that exploits PuTTy CVE-2024-31497.	https://github.com/HugoBond/CVE-2024-31497-POC	POC详情