CVE-2023-4256: broadcom tcpreplay Double Free
Vulnerability summary
CVE-2023-4256 is a medium (CVSS 5.5) Double Free vulnerability in broadcom tcpreplay. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.1% of scored vulnerabilities. 2 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 21-12-2023PublishedVulnerability first disclosed.
- 13-02-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
0.00 pp
From 0.33% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundTcpreplay
Maturity: poc
Exploit Reference (bugzilla.redhat.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Fedoraproject2 products
Broadcom1 product
- tcpreplay4.4.3 | 4.4.4
Debian1 product
- tcpreplayAll versions (No fix recorded) | < 4.5.1-1
Ubuntu1 product
- tcpreplay< 4.2.6-1ubuntu0.1~esm5 | < 4.3.2-1ubuntu0.1~esm3 | < 4.3.4-1ubuntu0.1~esm2 | < 4.4.4-1ubuntu0.1~esm1
4 vendors · 5 products
References
10 links- bugzilla.redhat.com/show_bug.cgi?id=2255212Issue TrackingX Refsource REDHATExploitThird Party Advisory
