CVE-2023-27533

Publication date 20 March 2023

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
curl	23.04 lunar	Fixed 7.88.1-6ubuntu2
	22.10 kinetic	Fixed 7.85.0-1ubuntu0.5
	22.04 LTS jammy	Fixed 7.81.0-1ubuntu1.10
	20.04 LTS focal	Fixed 7.68.0-1ubuntu2.18
	18.04 LTS bionic	Fixed 7.58.0-2ubuntu3.24
	16.04 LTS xenial	Fixed 7.47.0-1ubuntu2.19+esm8 Ubuntu Pro
	14.04 LTS trusty	Fixed 7.35.0-1ubuntu2.20+esm15 Ubuntu Pro

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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
curl	Upstream: 538b1e7

Severity score breakdown

Parameter	Value
Base score	8.8 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2023-27533

Cvss 3 Severity Score

Status

Get expanded security coverage with Ubuntu Pro

Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references