Medium severity · published Aug 25, 2021
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'
5.5
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TC
Tcpreplay · Broadcom
4.3.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-18976
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-18976
Exploit
https://github.com/appneta/tcpreplay/issues/556
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