UBUNTU-CVE-2020-1763

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Source

https://ubuntu.com/security/CVE-2020-1763

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-1763.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-1763

Upstream

CVE-2020-1763

Published

2020-05-12T14:15:00Z

Modified

2025-10-24T04:48:15Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

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.

References

Affected packages

Ubuntu:18.04:LTS / libreswan

Package

Name: libreswan
Purl: pkg:deb/ubuntu/libreswan@3.23-4?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.20-7build1

3.21-2

3.22-1

3.22-2

3.22-3

3.22-4

3.23-1

3.23-4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libreswan",
            "binary_version": "3.23-4"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-1763.json"

Ubuntu:20.04:LTS / libreswan