CVE-2019-5436

Publication date 22 May 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4 through 7.64.1.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
curl	19.04 disco	Fixed 7.64.0-2ubuntu1.1
	18.10 cosmic	Fixed 7.61.0-1ubuntu2.4
	18.04 LTS bionic	Fixed 7.58.0-2ubuntu3.7
	16.04 LTS xenial	Fixed 7.47.0-1ubuntu2.13
	14.04 LTS trusty	Fixed 7.35.0-1ubuntu2.20+esm2

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Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.8 · High

Base metrics

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

Scores

Parameter	Value
Base score	7.8 · High
Exploitability score	-
Impact score	-

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

References

Related Ubuntu Security Notices (USN)

USN-3993-2
curl vulnerability
22 May 2019

USN-3993-1
curl vulnerabilities
22 May 2019