CyberSecBulletin
CVE-2024-3833NVD status: Analyzed

Chrome: Passing Mutable Objects to an Untrusted Method

Published Updated By the CyberSecBulletin desk

CVE-2024-3833 is a high-severity passing mutable objects to an untrusted method vulnerability in Chrome from Google, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists version 124.0.6367.60 as the first without the flaw, so updating Chrome to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 17.6% chance of exploitation within 30 days, which is in the top 2.81% of all scored CVEs.

Patch this week

EPSS places it among the vulnerabilities most likely to be exploited soon.

What to do

  1. Update Chrome to 124.0.6367.60 or a later version.
  2. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
  3. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
GoogleChrome124.0.6367.60 up to, but not including, 124.0.6367.60; before 124.0.6367.60124.0.6367.60
Fedora Projectfedora39; 40; 38Not stated

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
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
RequiredA user must take an action such as opening a file or link.
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:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.18.8HighNVD
CVSS 3.18.8HighCISA (ADP)

Official description

Object corruption in WebAssembly in Google Chrome prior to 124.0.6367.60 allowed a remote attacker to potentially exploit object corruption via a crafted HTML page. (Chromium security severity: High)

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

The underlying weakness: Passing Mutable Objects to an Untrusted Method

The product sends non-cloned mutable data as an argument to a method or function.

How developers prevent this class of flaw

  • Pass in data which should not be altered as constant or immutable.
  • Clone all mutable data before passing it into an external function. This is the preferred mitigation. This way, regardless of what changes are made to the data, a valid copy is retained for use by the class.

More Passing Mutable Objects to an Untrusted Method vulnerabilities (CWE-374)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Technical write-ups (may include proof of concept)

Other vulnerabilities in Chrome

All Chrome vulnerabilities

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