CyberSecBulletin
CVE-2023-2626NVD status: Modified

Nest Hub Max: Improper Authentication

Published Updated By the CyberSecBulletin desk

CVE-2023-2626 is a high-severity improper authentication vulnerability in Nest Hub Max from Google, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. The record lists version 10.20221207.2.120 as the first without the flaw, so updating Nest Hub Max to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.11% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Nest Hub Max to 10.20221207.2.120 or a later version.
  2. Update Nest Hub (2nd. gen) w/ Sleep Tracking to 10.20221207.2.100042 or a later version.
  3. Update Nest Wifi 6E to 1.63.355999 or a later version.
  4. Read the advisory on support.google.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
GoogleNest Hub Max10.20221207.2.109 up to, but not including, 10.20221207.2.12010.20221207.2.120
GoogleNest Hub (2nd. gen) w/ Sleep Tracking10.20221207.2.100038 up to, but not including, 10.20221207.2.10004210.20221207.2.100042
GoogleNest Wifi 6E1.59 up to, but not including, 1.63.3559991.63.355999
GoogleGoogle Wifi (next gen)14150.881.7 up to, but not including, 14150.882.914150.882.9
GoogleNest Wifi Point1.56.1 up to, but not including, 1.56.3686711.56.368671
Googlenest_hub10.20221207.2.100038 up to, but not including, 10.20221207.2.10004210.20221207.2.100042
Googlewifi14150.881.7 up to, but not including, 14150.882.914150.882.9
GoogleNest Hub Max Firmware10.20221207.2.109 up to, but not including, 10.20221207.2.12010.20221207.2.120
GoogleNest Hub Firmware10.20221207.2.100038 up to, but not including, 10.20221207.2.10004210.20221207.2.100042
GoogleWiFi Firmware14150.881.7 up to, but not including, 14150.882.914150.882.9
GoogleNest WiFi Point Firmware1.56.1 up to, but not including, 1.56.3686711.56.368671
GoogleNest WiFi 6e Firmware1.59 up to, but not including, 1.63.3559991.63.355999

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
AdjacentThe attacker must be on the same local network segment.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

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

Scoring systemScoreSeverityScored by
CVSS 3.17.5HighCNA (google.com)
CVSS 3.18.8HighNVD

Official description

There exists an authentication bypass vulnerability in OpenThread border router devices and implementations. This issue allows unauthenticated nodes to craft radio frames using “Key ID Mode 2”: a special mode using a static encryption key to bypass security checks, resulting in arbitrary IP packets being allowed on the Thread network. This provides a pathway for an attacker to send/receive arbitrary IPv6 packets to devices on the LAN, potentially exploiting them if they lack additional authentication or contain any network vulnerabilities that would normally be mitigated by the home router’s NAT firewall. Effected devices have been mitigated through an automatic update beyond the affected range.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

How developers prevent this class of flaw

  • Use an authentication framework or library such as the OWASP ESAPI Authentication feature.

More Improper Authentication vulnerabilities (CWE-287)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Recent Improper Authentication vulnerabilities

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