dbcve.org
Ios XrOperating system · Cisco

CVE-2013-1204

MEDIUM · 5.0 CVSS v2.0 Published 2013-05-23
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 the SNMP process in Cisco IOS XR allows remote attackers to cause a denial of service (memory consumption or process reload) by sending many port-162 UDP packets, aka Bug ID CSCug80345.

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 · moderate confidence

Memory leak in the SNMP process in Cisco IOS XR allows remote attackers to cause denial of service by sending many UDP packets to port 162 (SNMP trap port). The vulnerability results in memory consumption that can lead to process reload or system unavailability.

MitigationBlock or rate-limit UDP port 162 traffic at network perimeter if SNMP is not required, or apply Cisco IOS XR patches/updates when available.

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
Ios XrOperating system
Affected:all versions

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. Confirm device is running Cisco IOS XR
    Execute 'show version' and look for 'IOS XR' in the output
    Affected if Device is running any version of Cisco IOS XR
  2. Verify SNMP is enabled
    Execute 'show snmp' to check SNMP configuration status
    Affected if SNMP is globally enabled on the device
  3. Check SNMP trap receiver configuration
    Execute 'show snmp host' or 'show running-config | include snmp' to see if UDP port 162 (SNMP trap receiver) is configured
    Affected if An SNMP trap receiver is configured to listen on UDP port 162
  4. Inspect SNMP process memory usage
    Execute 'show process snmp' and check for unusually high memory consumption or memory growth patterns
    Affected if The SNMP process shows abnormally high memory usage or is consuming increasing memory over time
  5. Check for recent SNMP-related reloads
    Execute 'show log' and search for SNMP process reload events or memory exhaustion messages
    Affected if Recent system logs show SNMP process reloads or SNMP-related memory exhaustion errors

The environment is affected if the device runs Cisco IOS XR with SNMP trap receiver enabled (listening on UDP port 162), regardless of version since all versions are vulnerable.

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

Block or rate-limit UDP port 162 traffic at network perimeter if SNMP is not required, or apply Cisco IOS XR patches/updates when available.

Fix this in Ios Xr Scoped from the published advisory
  • Consultation4.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA2.0 h
10.0 hours of engineering $1,820
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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-2013-1204 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
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data