CVE-2020-22218

Publication date 22 August 2023

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libssh2	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Fixed 1.8.0-2.1ubuntu0.1
	18.04 LTS bionic	Fixed 1.8.0-1ubuntu0.1
	16.04 LTS xenial	Fixed 1.5.0-2ubuntu0.1+esm2
	14.04 LTS trusty	Fixed 1.4.3-2ubuntu0.2+esm3

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libssh2	Upstream: 0b44e55

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-6371-1
libssh2 vulnerability
14 September 2023