Skip to content
Fencer Vulns
medium 5.0

CVE-2003-0001 json

Multiple ethernet Network Interface Card (NIC) device drivers do not pad frames with null bytes, which allows remote attackers to obtain in…

published 2003-01-08 23 y ago modified 2026-06-16 4 mo ago also EUVD-2003-0001

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
72.5%
EPSS 72.5% chance of exploitation in 30 days, percentile 99.4%
public exploits
3
Exploit-DB

Summary

Multiple ethernet Network Interface Card (NIC) device drivers do not pad frames with null bytes, which allows remote attackers to obtain information from previous packets or kernel memory by using malformed packets, as demonstrated by Etherleak.

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-2003-0001 updated cvss 5.3

cisco: information leak in ethernet frames.

  • Red Hat Linux 6.2 Red Hat Linux 7.0
    fixed: vendor fix RHSA-2003:088
  • Red Hat Linux 7.1 Red Hat Linux 7.2 Red Hat Linux 7.3 Red Hat Linux 8.0
    fixed: vendor fix RHSA-2003:025
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    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

Timeline

  1. Published
  2. First public exploit (EDB-22131)

Exploit prediction

72.51% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-26076 Cisco ASA < 8.4.4.6 < 8.2.5.32 - Ethernet Information Leak dos, 2013-06-10
  • EDB-22131 Linux Kernel 2.0.x/2.2.x/2.4.x (FreeBSD 4.x) - Network Device Driver Frame Padding Information Disclosure remote, 2007-03-23
  • EDB-3555 Ethernet Device Drivers Frame Padding - 'Etherleak' Infomation Leakage remote, 2007-03-23

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Technology feeds

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.