What is CVE-2020-18976?

CVE-2020-18976 is a medium-severity vulnerability in Broadcom Tcpreplay, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2021-08-25.

How severe is CVE-2020-18976?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Broadcom Tcpreplay

CVE-2020-18976

Buffer Overflow in Tcpreplay v4.3.2 allows attackers to cause a Denial of Service via the 'do_checksum' function in 'checksum.c'. It can be triggered by sending a crafted pcap file to the 'tcpreplay-edit' binary. This issue is different than CVE-2019-8381.

Vulnerability class: Buffer Overflow

EPSS: 0.007 (47.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Broadcom Tcpreplay — versions 4.3.2
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2020-18976?: CVE-2020-18976 is a medium-severity vulnerability in Broadcom Tcpreplay, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2021-08-25.
How severe is CVE-2020-18976?: Medium severity. CVSS v3 base score is 5.5 out of 10.