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Small Business Srp520 Series FirmwareApplication · Cisco

CVE-2012-0363

HIGH · 9.0 CVSS v2.0 Published 2012-02-25
Fix available
A fix is available. Upgrade to after 1.01.24 or later.
See remediation →
96/100
Remediation priority · Urgent
Remotely reachable Zero-click Patch available

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
The web interface on Cisco SRP 520 series devices with firmware before 1.1.26 and SRP 520W-U and 540 series devices with firmware before 1.2.4 allows remote authenticated users to execute arbitrary commands via unspecified vectors, related to a "command injection vulnerability," aka Bug ID CSCtt46871.

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
How this class of weakness works · CWE-94

The application evaluates attacker-influenced input as code, handing them a way to run logic inside the process. Depending on the runtime this can escalate directly to remote code execution. Remediation means removing dynamic evaluation of untrusted input and replacing it with safe, data-driven alternatives.

General guidance for the code injection class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
Small Business Srp520 Series FirmwareApplication
Affected:<= 1.01.24= 1.01.01= 1.01.09= 1.01.11= 1.01.19= 1.01.23
Small Business Srp521wHardware / appliance
Affected:all versions
Small Business Srp526wHardware / appliance
Affected:all versions
Small Business Srp527wHardware / appliance
Affected:all versions
Small Business Srp520 U Series FirmwareApplication
Affected:= 1.1.0
Small Business Srp521w UHardware / appliance
Affected:all versions
Small Business Srp526w UHardware / appliance
Affected:all versions
Small Business Srp527w UHardware / appliance
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
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete

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

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.

dbcve · scoped
Upgrade available Upgrade to a release after 1.01.24
Vendor patch tools.cisco.com →
Recommended fix High confidence

Firmware 1.1.26 (SRP 520 series) or 1.2.4 (SRP 520W-U/540 series)

  1. 1. Identify the exact Cisco SRP device model and current firmware version via the web interface or CLI.
  2. 2. Access the Cisco Security Advisory at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120223-srp500 to obtain the official firmware download links.
  3. 3. For SRP 520 Series devices: Upgrade firmware to version 1.1.26 or later.
  4. 4. For SRP 520W-U and 540 Series devices: Upgrade firmware to version 1.2.4 or later.
  5. 5. Download the appropriate firmware binary from Cisco's support site (requires valid service contract).
  6. 6. Upload the firmware via the device's web interface under Administration > Firmware Upgrade or via CLI using the firmware upgrade command.
  7. 7. After upgrade, verify the new firmware version and confirm the device is functioning normally.
  8. 8. As this is an authenticated command injection vulnerability, ensure strong administrator passwords are in place and consider network segmentation to limit exposure.
Caveat Standard firmware upgrade - review release notes for any configuration migration requirements

Generated from the published advisory — verify against the referenced sources before acting.

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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-2012-0363 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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