CVE-2018-10195

Publication date 2 June 2021

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

lrzsz before version 0.12.21~rc can leak information to the receiving side due to an incorrect length check in the function zsdata that causes a size_t to wrap around.

From the Ubuntu Security Team

It was discovered that rzsz incorrectly handled integers. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
lrzsz	18.10 cosmic	Not affected
	18.04 LTS bionic	Fixed 0.12.21-10~build0.18.04.1
	17.10 artful	Ignored end of life
	16.04 LTS xenial	Fixed 0.12.21-10~build0.16.04.1
	14.04 LTS trusty	Fixed 0.12.21-10~build0.14.04.1

Patch details

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

Package	Patch details
lrzsz	Distro: https://src.fedoraproject.org/cgit/rpms/lrzsz.git/tree/lrzsz-0.12.20.patch

Severity score breakdown

Parameter	Value
Base score	7.1 · High
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H