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

CVSS version: CVSS v3.0

Base score 7.1 · High

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	7.1 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H