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Fencer Vulns
medium 6.5

CVE-2023-1801 json

The SMB protocol decoder in tcpdump version 4.99.3 can perform an out-of-bounds write when decoding a crafted network packet.

published 2023-04-07 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-24003

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

The SMB protocol decoder in tcpdump version 4.99.3 can perform an out-of-bounds write when decoding a crafted network packet.

Patch / fix

  • tcpdump Debian 14, Debian 13 4.99.4-2

debian advisories DEBIAN-CVE-2023-1801

  • tcpdump openSUSE Tumbleweed 4.99.4-1.1

opensuse advisories openSUSE-SU-2024:12850-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-1801 updated cvss 6.5

tcpdump: OOB write in SMB decoder

  • Red Hat Enterprise Linux 6 tcpdump Red Hat Enterprise Linux 7 tcpdump
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 tcpdump Red Hat Enterprise Linux 9 tcpdump
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.84% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • The Tcpdump Group tcpdump

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.