What’s Vulnerable › Vulnerabilities

CVE-2018-20553

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-12-28 · updated 2026-06-17
• Weakness: CWE-125

Description

Tcpreplay before 4.3.1 has a heap-based buffer over-read in get_l2len in common/get.c.

Affected products

• appneta tcpreplay: before 4.3.1 — fixed in 4.3.1

How to fix

Upgrade to a fixed version: appneta tcpreplay 4.3.1. Check the vendor advisory for mitigations.

References

• https://github.com/appneta/tcpreplay/issues/530
• https://github.com/appneta/tcpreplay/pull/532/commits/6b830a1640ca20528032c89a4fdd8291a4d2d8b2
• https://github.com/appneta/tcpreplay/issues/530
• https://github.com/appneta/tcpreplay/pull/532/commits/6b830a1640ca20528032c89a4fdd8291a4d2d8b2

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