Critical Security Flaws in Vim: Important Update Required
Summary
RLSA-2026:48703: Important: vim security update. Affects vim versions < 2:8.0.1763-31.el8_10. Fixed in 2:8.0.1763-31.el8_10. How to fix ↓
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Background
Vim, short for Vi IMproved, is a highly configurable text editor built to enable efficient text editing. It is widely used by developers and system administrators for its powerful features and extensibility. However, recent vulnerabilities have been identified that could compromise the security of systems using Vim, necessitating immediate attention and updates.
Vulnerability Detail
The vulnerabilities in Vim include a denial of service due to a stack out-of-bounds write in the spell_soundfold_sofo() function, arbitrary code execution through malicious docstrings in Python omni-completion, an out-of-bounds write in the Spell File Word Count, and arbitrary command execution via crafted tags files in C omni-completion. These vulnerabilities can lead to severe consequences, including system crashes and unauthorized access to sensitive data.
How To Fix
Minimum fixed version
2:8.0.1763-31.el8_10
This is the first release that contains the fix.
sudo dnf update vimTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can disable Python omni-completion and refrain from using crafted tags files until the update is applied. This can be done by modifying the Vim configuration file to exclude these features.
Conclusion
The identified vulnerabilities in Vim pose serious security risks that require immediate attention. Users are strongly encouraged to update to the latest patched version to safeguard their systems. Utilizing tools like Vulert can further enhance security by providing real-time monitoring for vulnerabilities.
See every vulnerability recorded for vim →
FAQ
The CVSS score of the vulnerability is 7.8, indicating a high level of severity.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The vulnerabilities can lead to denial of service, arbitrary code execution, and unauthorized access to sensitive information, posing significant risks to system integrity.
Yes, Vulert can monitor and alert you in real-time for open-source vulnerabilities in your software using just a manifest file like package-lock.json.
If an immediate update is not possible, consider disabling vulnerable features and monitoring your system for any unusual activity until the update can be applied.
References
Related vulnerabilities
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