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JunosOperating system · Juniper

CVE-2006-3529

MEDIUM · 5.0 CVSS v2.0 Published 2006-07-12
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
59/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Memory leak in Juniper JUNOS 6.4 through 8.0, built before May 10, 2006, allows remote attackers to cause a denial of service (kernel packet memory consumption and crash) via crafted IPv6 packets whose buffers are not released after they are processed.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A memory leak in Juniper JUNOS versions 6.4 through 8.0 (built before May 10, 2006) causes kernel packet memory to accumulate when processing certain crafted IPv6 packets. The buffers for these packets are not properly released after processing, leading to memory exhaustion and eventual system crash.

MitigationUpgrade to a JUNOS version built on or after May 10, 2006, or apply the relevant patch. This is a legacy vulnerability from 2006; organizations still running affected versions should perform a comprehensive inventory of network devices and plan a firmware upgrade to a supported JUNOS release.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
JunosOperating system
Affected:= 6.4= 6.5= 6.6= 6.7= 6.8= 6.9= 7.0= 7.1= 7.2= 7.3= 7.4= 7.5

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Determine installed JUNOS version
    Execute the command 'show version' on the Juniper device CLI to retrieve the software version number
    Affected if The version displayed matches any of: 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1, 7.2, 7.3, 7.4, or 7.5
  2. Determine JUNOS build date
    Execute the command 'show version detail' or 'show system information' to locate the build timestamp
    Affected if The build date is before May 10, 2006 (the vulnerability only exists in builds prior to this date)
  3. Verify if IPv6 is enabled
    Execute 'show ipv6 interface' or check the configuration with 'show configuration | display xml | match ipv6'
    Affected if IPv6 is enabled on the device (the memory leak only triggers when processing IPv6 packets)

The device is affected if it runs JUNOS version 6.4-7.5, was built before May 10, 2006, and has IPv6 functionality enabled.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to a JUNOS version built on or after May 10, 2006, or apply the relevant patch. This is a legacy vulnerability from 2006; organizations still running affected versions should perform a comprehensive inventory of network devices and plan a firmware upgrade to a supported JUNOS release.

Fix this in Junos Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2006-3529 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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