Critical Vulnerability in Avahi Package: CVE-2018-1000845
Summary
ALPINE-CVE-2018-1000845: Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. Affects avahi versions < 0.7-r2. Fixed in 0.7-r2. How to fix ↓
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Background
Avahi is an open-source implementation of the Zeroconf protocol, which facilitates service discovery on a local network. It allows devices to find each other without the need for manual configuration. The package is widely used in various Linux distributions, including Alpine Linux, to enable seamless communication between devices. However, it has been identified to have a vulnerability that could potentially compromise the security of systems utilizing this package.
Vulnerability Detail
The vulnerability identified as CVE-2018-1000845 is a duplicate of CVE-2017-6519. It poses a risk as it allows for potential exploitation, which could lead to unauthorized access or denial of service. The vulnerability affects multiple versions of the Avahi package across various Alpine Linux releases, making it critical for users to address it promptly to avoid security breaches.
How To Fix
Minimum fixed version
0.7-r2
This is the first release that contains the fix.
sudo apk add --upgrade avahiTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider disabling the Avahi service temporarily until the update can be applied. This can be done with the command: 'rc-service avahi-daemon stop'. However, this is only a temporary measure and should not replace the need for a proper update.
Conclusion
In summary, CVE-2018-1000845 represents a significant vulnerability in the Avahi package that requires immediate attention. Users are advised to update to the patched version 0.7-r2 to mitigate potential risks. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
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FAQ
CVE-2018-1000845 is a vulnerability in the Avahi package that is a duplicate of CVE-2017-6519, which could lead to unauthorized access or denial of service.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
If you cannot update the package right away, consider stopping the Avahi service temporarily as a workaround until you can apply the patch.
Yes, this vulnerability is considered critical as it can lead to significant security risks if left unaddressed.
More information about Avahi can be found on its official documentation and repositories, which provide insights into its functionality and usage.
References
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