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CVE-2020-1763

Quick assessment

Affected
the libreswan Project libreswan
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.

Libreswan是一个类似于Openswan的IPsec实现，它主要用于保证数据传输中的安全性、完整性问题。 libreswan 3.27版本至3.31版本中的pluto守护进程存在缓冲区错误漏洞。攻击者可通过发送特制的IKEv1 Informational Exchange数据包利用该漏洞使libreswan崩溃。

CVSS 7.5 · High EPSS 3.57% · P89

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-1763

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An out-of-bounds buffer read flaw was found in the pluto daemon of libreswan from versions 3.27 till 3.31 where, an unauthenticated attacker could use this flaw to crash libreswan by sending specially-crafted IKEv1 Informational Exchange packets. The daemon respawns after the crash.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Libreswan 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Libreswan是一个类似于Openswan的IPsec实现，它主要用于保证数据传输中的安全性、完整性问题。 libreswan 3.27版本至3.31版本中的pluto守护进程存在缓冲区错误漏洞。攻击者可通过发送特制的IKEv1 Informational Exchange数据包利用该漏洞使libreswan崩溃。
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 libreswan Project libreswan from versions 3.27 till 3.31 -

II. Public POCs for CVE-2020-1763

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III. Intelligence Information for CVE-2020-1763

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Patches & Fixes for CVE-2020-1763 (1)

Vendor Advisories for CVE-2020-1763 (5)

Other References for CVE-2020-1763 (1)

IV. Related Vulnerabilities

Same product: libreswan
Same vendor: the libreswan Project
Same weakness: CWE-125

V. Comments for CVE-2020-1763

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