CVE-2003-0001 : Detail

CVE-2003-0001

A01-Broken Access Control
25.72%V3
Network
2003-01-08
04h00 +00:00
2018-10-19
12h57 +00:00
CVE.org
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CVE Descriptions

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.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Metrics

Metrics Score Severity CVSS Vector Source
V2 5 AV:N/AC:L/Au:N/C:P/I:N/A:N nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
EPSS V0
EPSS V1
EPSS V2
EPSS V3
50.0050.0040.0040.0030.0030.0020.0020.0010.0010.000.000.0044.55%2.67%2.33%2.33%2.33%2.63%2.63%25.72%Jul '22Jul '2220232023Jul '23Jul '2320242024Jul '24Jul '24
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EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
9999969693939090878798%89%88%89%90%90%91%97%Jul '22Jul '2220232023Jul '23Jul '2320242024Jul '24Jul '24
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EPSS First.org

Exploit information

Exploit Database EDB-ID : 22131

Publication date : 2007-03-22 23h00 +00:00
Author : Jon Hart
EDB Verified : Yes

source: https://www.securityfocus.com/bid/6535/info
Network device drivers for several vendors have been reported to disclose potentially sensitive information to attackers.
Frames that are smaller than the minimum frame size should have the unused portion of the frame buffer padded with null (or other) bytes. Some device drivers fail to do this adequately, leaving the data that was stored in the memory comprising the buffer prior to its use intact. Consequently, this data may be transmitted within frames across Ethernet segments. Since the Ethernet frame buffer is allocated in kernel memory space, sensitive data may be leaked.
Cisco has stated that the IOS 12.1 and 12.2 trains are not affected.
National Semiconductor Ethernet controller chips are not vulnerable to this issue.
#!/usr/bin/perl -w
# etherleak, code that has been 5 years coming.
#
# On 04/27/2002, I disclosed on the Linux Kernel Mailing list,
# a vulnerability that would be come known as the 'etherleak' bug. In
# various situations an ethernet frame must be padded to reach a specific
# size or fall on a certain boundary. This task is left up to the driver
# for the ethernet device. The RFCs state that this padding must consist
# of NULLs. The bug is that at the time and still to this day, many device
# drivers do not pad will NULLs, but rather pad with unsanitized portions
# of kernel memory, oftentimes exposing sensitive information to remote
# systems or those savvy enough to coerce their targets to do so.
#
 
 
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Exploit Database EDB-ID : 26076

Publication date : 2013-06-09 22h00 +00:00
Author : prdelka
EDB Verified : No

#!/usr/bin/env python
# CVE-2003-0001 'Etherleak' exploit
# =================================
# Exploit for hosts which use a network device driver that pads
# ethernet frames with data which vary from one packet to another,
# likely taken from kernel memory, system memory allocated to
# the device driver, or a hardware buffer on its network interface
# card. Exploit uses scapy with either ICMP or ARP requests as
# this can trigger with either but ICMP can hit layer3 filtering
# rules. Using ARP the padding appears to leak only fixed constant
# values when exploited, ICMP leaks random bytes.
#
# root@bt:~/0d# python cve-2003-0001.py x.x.x.254 icmp leaky
# WARNING: No route found for IPv6 destination :: (no default route?)
# [ CVE-2003-0001 'Etherleak' exploit
# [ Attacking x.x.x.254 for icmp padding saved to leaky.hex
# ............................................................^C!Killing
# !Killing
# root@bt:~/0d# hexdump -C leaky | head
# 00000000 e6 bd a6 9b 90 eb 44 f5 18 a5 29 2a 16 5a 08 ff |......D...)*.Z..|
# 00000010 43 e1 23 07 8f 96 5a 24 3f 3d 33 7d b4 97 7e 18 |C.#...Z$?=3}..~.|
# 00000020 05 c9 7c 2c a5 c0 fa 7a 76 f3 51 c0 fe 07 72 32 |..|,...zv.Q...r2|
# 00000030 9e ad 6a 67 ad 43 58 17 60 43 bc 2b b8 fb cc 70 |..jg.CX.`C.+...p|
 
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Exploit Database EDB-ID : 3555

Publication date : 2007-03-22 23h00 +00:00
Author : Jon Hart
EDB Verified : Yes

#!/usr/bin/perl -w
# etherleak, code that has been 5 years coming.
#
# On 04/27/2002, I disclosed on the Linux Kernel Mailing list,
# a vulnerability that would be come known as the 'etherleak' bug. In
# various situations an ethernet frame must be padded to reach a specific
# size or fall on a certain boundary. This task is left up to the driver
# for the ethernet device. The RFCs state that this padding must consist
# of NULLs. The bug is that at the time and still to this day, many device
# drivers do not pad will NULLs, but rather pad with unsanitized portions
# of kernel memory, oftentimes exposing sensitive information to remote
# systems or those savvy enough to coerce their targets to do so.
#
# Proof of this can be found by googling for 'warchild and etherleak', or
# by visiting:
#
# http://lkml.org/lkml/2002/4/27/101
#
# This was ultimately fixed in the Linux kernel, but over time this
# vulnerability reared its head numerous times, but at the core the
# vulnerability was the same as the one I originally published. The most
# public of these was CVE-2003-0001, which was assigned to address an
# official @stake advisory.
 
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Products Mentioned

Configuraton 0

Freebsd>>Freebsd >> Version 4.2

Freebsd>>Freebsd >> Version 4.3

Freebsd>>Freebsd >> Version 4.4

Freebsd>>Freebsd >> Version 4.5

Freebsd>>Freebsd >> Version 4.6

Freebsd>>Freebsd >> Version 4.7

Linux>>Linux_kernel >> Version 2.4.1

Linux>>Linux_kernel >> Version 2.4.2

Linux>>Linux_kernel >> Version 2.4.3

Linux>>Linux_kernel >> Version 2.4.4

Linux>>Linux_kernel >> Version 2.4.5

Linux>>Linux_kernel >> Version 2.4.6

Linux>>Linux_kernel >> Version 2.4.7

Linux>>Linux_kernel >> Version 2.4.8

Linux>>Linux_kernel >> Version 2.4.9

Linux>>Linux_kernel >> Version 2.4.10

Linux>>Linux_kernel >> Version 2.4.11

Linux>>Linux_kernel >> Version 2.4.12

Linux>>Linux_kernel >> Version 2.4.13

Linux>>Linux_kernel >> Version 2.4.14

Linux>>Linux_kernel >> Version 2.4.15

Linux>>Linux_kernel >> Version 2.4.16

Linux>>Linux_kernel >> Version 2.4.17

Linux>>Linux_kernel >> Version 2.4.18

Linux>>Linux_kernel >> Version 2.4.19

Linux>>Linux_kernel >> Version 2.4.20

Microsoft>>Windows_2000 >> Version *

Microsoft>>Windows_2000 >> Version *

Microsoft>>Windows_2000 >> Version *

Microsoft>>Windows_2000_terminal_services >> Version *

Microsoft>>Windows_2000_terminal_services >> Version *

Microsoft>>Windows_2000_terminal_services >> Version *

Netbsd>>Netbsd >> Version 1.5

Netbsd>>Netbsd >> Version 1.5.1

Netbsd>>Netbsd >> Version 1.5.2

Netbsd>>Netbsd >> Version 1.5.3

Netbsd>>Netbsd >> Version 1.6

References

http://www.securitytracker.com/id/1031583
Tags : vdb-entry, x_refsource_SECTRACK
http://www.osvdb.org/9962
Tags : vdb-entry, x_refsource_OSVDB
http://www.redhat.com/support/errata/RHSA-2003-088.html
Tags : vendor-advisory, x_refsource_REDHAT
http://marc.info/?l=bugtraq&m=104222046632243&w=2
Tags : mailing-list, x_refsource_BUGTRAQ
http://www.kb.cert.org/vuls/id/412115
Tags : third-party-advisory, x_refsource_CERT-VN
http://www.redhat.com/support/errata/RHSA-2003-025.html
Tags : vendor-advisory, x_refsource_REDHAT
http://secunia.com/advisories/7996
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.atstake.com/research/advisories/2003/a010603-1.txt
Tags : vendor-advisory, x_refsource_ATSTAKE
http://www.securitytracker.com/id/1040185
Tags : vdb-entry, x_refsource_SECTRACK