CVE-2018-0500

Publication date 11 July 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Curl_smtp_escape_eob in lib/smtp.c in curl 7.54.1 to and including curl 7.60.0 has a heap-based buffer overflow that might be exploitable by an attacker who can control the data that curl transmits over SMTP with certain settings (i.e., use of a nonstandard --limit-rate argument or CURLOPT_BUFFERSIZE value).

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
curl	18.04 LTS bionic	Fixed 7.58.0-2ubuntu3.2
	17.10 artful	Fixed 7.55.1-1ubuntu2.6
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

mdeslaur

introduced by: https://github.com/curl/curl/commit/e40e9d7f0decc79 curl 7.54.1 to and including curl 7.60.0

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H