Out-of-bounds Read in Tcpdump

CVE-2020-8036

The tok2strbuf() function in tcpdump 4.10.0-PRE-GIT was used by the SOME/IP dissector in an unsafe way.

Vulnerability class: Buffer Overflow

EPSS: 0.014 (70.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Tcpdump — versions 4.10.0
The Tcpdump Group — versions 4.10.0-PRE-GIT

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

yan5ui/ENV-CVE-2020-8036

References

security@tcpdump.org (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-8036?: CVE-2020-8036 is a high-severity vulnerability in Tcpdump, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2020-11-04.
How severe is CVE-2020-8036?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2020-8036 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.