CyberSecBulletin
CVE-2024-4854NVD status: Modified

Wireshark: Loop with Unreachable Exit Condition

Published Updated By the CyberSecBulletin desk

CVE-2024-4854 is a high-severity loop with unreachable exit condition vulnerability in Wireshark from Wireshark Foundation, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 4.2.5, 4.0.15, 3.6.23 as the first without the flaw, so updating Wireshark to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.81% chance of exploitation within 30 days, higher than 58% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Wireshark to 4.2.5 or 4.0.15 or 3.6.23, whichever matches your release line, or a later version.
  2. Read the advisory on wireshark.org for workarounds and exact fixed builds.
  3. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
Wireshark FoundationWireshark4.2.0 up to, but not including, 4.2.5; 4.0.0 up to, but not including, 4.0.15; 3.6.0 up to, but not including, 3.6.234.2.5, 4.0.15, 3.6.23
Fedora ProjectFedora39; 40Not 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
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
NoneNo data is disclosed.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

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

Scoring systemScoreSeverityScored by
CVSS 3.16.4MediumCNA (gitlab.com)
CVSS 3.17.5HighNVD

Official description

MONGO and ZigBee TLV dissector infinite loops in Wireshark 4.2.0 to 4.2.4, 4.0.0 to 4.0.14, and 3.6.0 to 3.6.22 allow denial of service via packet injection or crafted capture file

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

The underlying weakness: Loop with Unreachable Exit Condition

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

More Loop with Unreachable Exit Condition vulnerabilities (CWE-835)

Timeline

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

References

Recent Loop with Unreachable Exit Condition vulnerabilities

Spotted an error? Tell us.