CyberSecBulletin
CVE-2024-7481NVD status: Deferred

Remote Full Client: Improper Verification of Cryptographic Signature

Published Updated By the CyberSecBulletin desk

CVE-2024-7481 is a high-severity improper verification of cryptographic signature vulnerability in Remote Full Client from TeamViewer, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions 15.58.4, 14.7.48796, 13.2.36225 as the first without the flaw, so updating Remote Full Client to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.27% 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 Remote Full Client to 15.58.4 or 14.7.48796 or 13.2.36225 or 12.0.259312, whichever matches your release line, or a later version.
  2. Update Remote Host to 15.58.4 or 14.7.48796 or 13.2.36225 or 12.0.259312, whichever matches your release line, or a later version.
  3. Update host to 15.58.4 or 14.7.48796 or 13.2.36225 or 12.0.259312, whichever matches your release line, or a later version.
  4. Read the advisory on teamviewer.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
TeamViewerRemote Full Client15.0.0 up to, but not including, 15.58.4; 14.0.0 up to, but not including, 14.7.48796; 13.0.0 up to, but not including, 13.2.36225; 12.0.0 up to, but not including, 12.0.259312; 11.0.0 up to, but not including, 11.0.25931115.58.4, 14.7.48796, 13.2.36225, 12.0.259312, 11.0.259311
TeamViewerRemote Host15.0.0 up to, but not including, 15.58.4; 14.0.0 up to, but not including, 14.7.48796; 13.0.0 up to, but not including, 13.2.36225; 12.0.0 up to, but not including, 12.0.259312; 11.0.0 up to, but not including, 11.0.25931115.58.4, 14.7.48796, 13.2.36225, 12.0.259312, 11.0.259311
Teamviewerhost15.0.0 up to, but not including, 15.58.4; 14.0.0 up to, but not including, 14.7.48796; 13.0.0 up to, but not including, 13.2.36225; 12.0.0 up to, but not including, 12.0.259312; 11.0.0 up to, but not including, 11.0.25931115.58.4, 14.7.48796, 13.2.36225, 12.0.259312, 11.0.259311

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
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
ChangedThe attack can reach beyond the vulnerable component into other systems.
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:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. Scored by CNA (teamviewer.com).

Official description

Improper verification of cryptographic signature during installation of a Printer driver via the TeamViewer_service.exe component of TeamViewer Remote Clients prior version 15.58.4 for Windows allows an attacker with local unprivileged access on a Windows system to elevate their privileges and install drivers.

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

The underlying weakness: Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

More Improper Verification of Cryptographic Signature vulnerabilities (CWE-347)

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

Other vulnerabilities in Remote Full Client

All Remote Full Client vulnerabilities

Recent Improper Verification of Cryptographic Signature vulnerabilities

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