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CVE-2023-4256

19
FAUCET Score

CVE-2023-4256 is a double free vulnerability in tcpreplay's tcprewrite utility, specifically within the tcpedit_dlt_cleanup() function, affecting various Broadcom and Fedora tcpreplay packages. This flaw allows a local attacker to trigger a Denial of Service (DoS) by providing a specially crafted file. Rated Medium severity (CVSS 5.5), it requires user interaction and local access, but has no impact on confidentiality or integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE match
cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:*:*:*:*:*:*:*:*
All Versions ImpactedCPE match
cpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
4.4.3CPE matchmatch criteria
cpe:2.3:a:broadcom:tcpreplay:4.4.3:*:*:*:*:*:*:*
4.4.4CPE matchmatch criteria
cpe:2.3:a:broadcom:tcpreplay:4.4.4:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
25.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0033 is in the 31st percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugzilla.redhat.com / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
github.com / appneta/tcpreplay/issues/813
ExploitIssue TrackingThird Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/EHUILQV2YJI5TXXXJA5FQ2HJQGFT7NTN
lists.fedoraproject.org / archives/list/[email protected]/message/TMW5CIODKRHUUH7NTAYIRWGSJ56DTGXM
lists.fedoraproject.org / archives/list/[email protected]/message/V3GYCHPVJ2VFN3D7FI4IRMDVMILLWBRF