CVE-2017-12234 Cisco IOS software: software flaw
In plain words: A mistake in the software that attackers have found a way to abuse. Depends on the product — see the description and the vendor advisory.
Confirmed exploited by CISA on · US federal patch deadline Mar 24, 2022
What to do
- Install Cisco's security update for IOS software. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Install system updates the day they come out — most phone zero-days are fixed in a point release.
- Restart your phone every few days; some spyware does not survive a reboot.
- If you are a journalist, activist, lawyer, politician or executive, turn on Lockdown Mode (iPhone) or Advanced Protection (Android).
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Messages, photos, location, microphone and camera. The most serious ones are "zero-click": no tap needed from the owner. They are usually used as spyware against a small number of chosen people.
The details
- Official name
- Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability
- Product
- Cisco IOS software
- CISA description
- There is a vulnerability in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service.
- Type of flaw
- Software flaw (CWE-20)
- Confirmed exploited
- Mar 3, 2022
- US federal patch deadline
- Mar 24, 2022
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Answering about CVE-2017-12234 ·
Questions about CVE-2017-12234
Is CVE-2017-12234 being exploited?
Yes. CISA added CVE-2017-12234 to its Known Exploited Vulnerabilities catalog on Mar 3, 2022, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2017-12234?
Install Cisco's security update for IOS software. If no update exists, follow the vendor's workaround or stop using the product until one ships. Install system updates the day they come out — most phone zero-days are fixed in a point release.
Am I affected by CVE-2017-12234?
Only if you use Cisco IOS software. This one is aimed at devices or apps of the kind people own.