CVE-2019-3861
Quick assessment
Affected
The libssh2 Project libssh2
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
libssh2是一款实现SSH2协议的客户端C库，它能够执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。 libssh2中存在越界读取漏洞。远程攻击者可利用该漏洞造成拒绝服务或读取客户端内存中的数据。
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I. Basic Information for CVE-2019-3861
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
libssh2 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libssh2是一款实现SSH2协议的客户端C库，它能够执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。 libssh2中存在越界读取漏洞。远程攻击者可利用该漏洞造成拒绝服务或读取客户端内存中的数据。
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 |
|---|---|---|---|---|
| The libssh2 Project | libssh2 | 1.8.1 | - |
|
II. Public POCs for CVE-2019-3861
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2019-3861 (4)
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https://security.netapp.com/advisory/ntap-20190327-0005/ x_refsource_CONFIRM
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Mailing List Discussions for CVE-2019-3861 (5)
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http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html vendor-advisory x_refsource_SUSE
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/ vendor-advisory x_refsource_FEDORA
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Same Patch Batch · The libssh2 Project · 2019-03-25 · 5 CVEs total
| CVE-2019-3856 | libssh2 输入验证错误漏洞 | |
| CVE-2019-3857 | libssh2 输入验证错误漏洞 | |
| CVE-2019-3860 | libssh2 缓冲区错误漏洞 | |
| CVE-2019-3863 | libssh2 缓冲区错误漏洞 |
IV. Related Vulnerabilities
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-
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-
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V. Comments for CVE-2019-3861
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