CVE-2024-23170

Published: 31 January 2024

An issue was discovered in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2. There was a timing side channel in RSA private operations. This side channel could be sufficient for a local attacker to recover the plaintext. It requires the attacker to send a large number of messages for decryption, as described in "Everlasting ROBOT: the Marvin Attack" by Hubert Kario.

Priority

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package	Release	Status
mbedtls Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Needs triage
	jammy	Needs triage
	mantic	Ignored (end of life, was needs-triage)
	noble	Needs triage
	trusty	Does not exist
	upstream	Released (2.28.7-1)
	xenial	Needs triage

Severity score breakdown

Parameter	Value
Base score	5.5
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Join the discussion

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›