CVE-2004-0230
MediumPublic exploitTCP, when using a large Window Size, makes it easier for remote attackers to guess sequence numbers and cause a denial of service (connection loss) to persistent TCP connections by repeatedly injecting a TCP RST packet, especially in protocols that use long-lived connections,…
Published Aug 18, 2004 · Updated Oct 9, 2026 · Also known as DEBIAN-CVE-2004-0230, ROOT-OS-DEBIAN-12-CVE-2004-0230, ROOT-OS-DEBIAN-13-CVE-2004-0230, SUSE-SU-2017:0333-1, SUSE-SU-2017:0437-1, SUSE-SU-2017:0494-1, SUSE-SU-2017:1102-1
Key Facts
Patch immediately- CVE-2004-0230 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Network Data Loss Prevention (Mcafee), Openpgp, Junos (Juniper) and 22 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 80% probability of exploitation in the next 30 days.
- Fixed versions are available, including Junos 11.4, kernel-bigmem 3.0.101-94.1, kernel-bigmem-base 3.0.101-94.1.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS (30-day exploit likelihood)
80%
Higher than 99.6% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2004-0230 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
TCP, when using a large Window Size, makes it easier for remote attackers to guess sequence numbers and cause a denial of service (connection loss) to persistent TCP connections by repeatedly injecting a TCP RST packet, especially in protocols that use long-lived connections, such as BGP.
Affected Products
337 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Network Data Loss PreventionMcafee | 9.2.0, 9.2.1, 9.2.2 | 8.6 |
| OpenpgpOpenpgp | 2.6.2 | n/a |
| JunosJuniper | 11.4, 11.4-r1, 11.4-r10, 11.4r13-s2, 11.4-r2, 11.4-r3, 11.4-r4, 11.4-r5 | 11.4 |
| Windows 2000Microsoft | See advisory | n/a |
| Windows 98Microsoft | See advisory | n/a |
Patched Releases
Junos
11.4
kernel-bigmem
3.0.101-94.1
kernel-bigmem-base
3.0.101-94.1
kernel-bigmem-devel
3.0.101-94.1
kernel-bigsmp
3.0.101-0.47.96.1
kernel-bigsmp-base
3.0.101-0.47.96.1
kernel-bigsmp-devel
3.0.101-0.47.96.1
kernel-default
3.0.101-0.47.96.1, 3.0.101-0.7.53.1, 3.0.101-94.1
kernel-default-base
3.0.101-0.47.96.1, 3.0.101-0.7.53.1, 3.0.101-94.1
kernel-default-devel
3.0.101-0.47.96.1, 3.0.101-0.7.53.1, 3.0.101-94.1
kernel-default-man
3.0.101-0.47.96.1, 3.0.101-0.7.53.1, 3.0.101-94.1
kernel-docs
3.0.101-94.2
kernel-ec2
3.0.101-0.47.96.1, 3.0.101-0.7.53.1, 3.0.101-94.1
kernel-ec2-base
3.0.101-0.47.96.1, 3.0.101-0.7.53.1, 3.0.101-94.1
kernel-ec2-devel
3.0.101-0.47.96.1, 3.0.101-0.7.53.1, 3.0.101-94.1
kernel-pae
3.0.101-0.47.96.1, 3.0.101-0.7.53.1, 3.0.101-94.1
kernel-pae-base
3.0.101-0.47.96.1, 3.0.101-0.7.53.1, 3.0.101-94.1
kernel-pae-devel
3.0.101-0.47.96.1, 3.0.101-0.7.53.1, 3.0.101-94.1
kernel-ppc64
3.0.101-94.1
kernel-ppc64-base
3.0.101-94.1
kernel-ppc64-devel
3.0.101-94.1
kernel-rt
3.0.101.rt130-68.1
kernel-rt_trace
3.0.101.rt130-68.1
kernel-rt_trace-base
3.0.101.rt130-68.1
kernel-rt_trace-devel
3.0.101.rt130-68.1
Timeline
Publicly disclosed
Aug 18, 2004
Last updated
Oct 9, 2026
References
- advisoryhttp://kb.juniper.net/JSA10638
- advisoryhttps://bugzilla.suse.com/1001419
- advisoryhttps://bugzilla.suse.com/1002165
- advisoryhttps://bugzilla.suse.com/1003077
- advisoryhttps://bugzilla.suse.com/1003253
FAQ
Common Questions.
TCP, when using a large Window Size, makes it easier for remote attackers to guess sequence numbers and cause a denial of service (connection loss) to persistent TCP connections by repeatedly injecting a TCP RST packet, especially in protocols that use long-lived connections, such as BGP.
Affected: Network Data Loss Prevention (Mcafee) versions 9.2.0, 9.2.1, 9.2.2; Openpgp versions 2.6.2; Junos (Juniper) versions 11.4, 11.4-r1, 11.4-r10, 11.4r13-s2, 11.4-r2, 11.4-r3, 11.4-r4, 11.4-r5, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Junos 11.4, kernel-bigmem 3.0.101-94.1, kernel-bigmem-base 3.0.101-94.1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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