CVE-2023-4256

Publication date 21 December 2023

Last updated 28 January 2025

Ubuntu priority

Cvss 3 Severity Score

Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the tcpedit_dlt_cleanup() function within plugins/dlt_plugins.c. This vulnerability can be exploited by supplying a specifically crafted file to the tcprewrite binary. This flaw enables a local attacker to initiate a Denial of Service (DoS) attack.

Why is this CVE low priority?

CLI tool crash only

Learn more about Ubuntu priority

Status

Show unmaintained releases

Package	Ubuntu Release	Status
tcpreplay	24.10 oracular	Not affected
	24.04 LTS noble	Fixed 4.4.4-1ubuntu0.1~esm1 Ubuntu Pro
	23.10 mantic	Ignored end of life, was needs-triage
	23.04 lunar	Ignored end of life, was needs-triage
	22.04 LTS jammy	Fixed 4.3.4-1ubuntu0.1~esm2 Ubuntu Pro
	20.04 LTS focal	Fixed 4.3.2-1ubuntu0.1~esm3 Ubuntu Pro
	18.04 LTS bionic	Fixed 4.2.6-1ubuntu0.1~esm5 Ubuntu Pro
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Ignored end of standard support

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
tcpreplay	Upstream: b002ccc

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-7231-1
Tcpreplay vulnerabilities
28 January 2025