Bug 1219336 (CVE-2024-23170)

Summary:	VUL-0: CVE-2024-23170: mbedtls: timing side channel in private key RSA operations
Product:	[openSUSE] openSUSE Distribution	Reporter:	SMASH SMASH <smash_bz>
Component:	Other	Assignee:	Martin Pluskal <mpluskal>
Status:	IN_PROGRESS ---	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	andrea.mattiazzo, jaime.marquinez.ferrandiz, meissner
Version:	Leap 15.6
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/392471/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-01-30 08:57:39 UTC

CVE-2024-23170 Timing side channel in private key RSA operations.

Mbed TLS is vulnerable to a timing side channel in private key RSA operations. This side channel could be sufficient for an attacker to recover the plaintext. A local attacker or a remote attacker who is close to the victim on the network might have precise enough timing measurements to exploit this. It requires the attacker to send a large number of messages for decryption.

https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2024-01-1/

Resolution: update net-libs/mbedtls to 2.28.7 and 3.5.2.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-23170
https://bugzilla.redhat.com/show_bug.cgi?id=2261598

Comment 1 Andrea Mattiazzo 2024-01-30 08:58:13 UTC

Tracking as affected:
- openSUSE:Backports:SLE-15-SP4/mbedtls  2.28.0
- openSUSE:Backports:SLE-15-SP5/mbedtls  2.28.2
- openSUSE:Factory/mbedtls               3.5.1 
- openSUSE:Factory/mbedtls-2             2.28.6

Comment 2 Martin Pluskal 2024-01-31 08:29:14 UTC

(In reply to Andrea Mattiazzo from comment #1)
> Tracking as affected:
> - openSUSE:Backports:SLE-15-SP4/mbedtls  2.28.0
Is SP4 still supported?

Comment 3 Andrea Mattiazzo 2024-01-31 09:09:58 UTC

(In reply to Martin Pluskal from comment #2)
> (In reply to Andrea Mattiazzo from comment #1)
> > Tracking as affected:
> > - openSUSE:Backports:SLE-15-SP4/mbedtls  2.28.0
> Is SP4 still supported?

No, it's not supported, so it's up to maintainers if they want to fix also that code stream or not.

Comment 4 OBSbugzilla Bot 2024-01-31 09:35:02 UTC

This is an autogenerated message for OBS integration:
This bug (1219336) was mentioned in
https://build.opensuse.org/request/show/1142919 Factory / mbedtls
https://build.opensuse.org/request/show/1142922 Factory / mbedtls-2
https://build.opensuse.org/request/show/1142926 Backports:SLE-15-SP5 / mbedtls

Comment 5 Marcus Meissner 2024-01-31 23:04:58 UTC

openSUSE-SU-2024:0037-1: An update that fixes one vulnerability is now available.

Category: security (moderate)
Bug References: 1219336
CVE References: CVE-2024-23170
JIRA References: 
Sources used:
openSUSE Backports SLE-15-SP5 (src):    mbedtls-2.28.7-bp155.2.3.1