Platform
ruby
Component
rubocop
Opgelost in
0.49.0
CVE-2017-8418 affects RuboCop versions up to 0.9.1. This vulnerability stems from RuboCop's insecure handling of temporary files within the /tmp directory, enabling local users to potentially tamper with cache files belonging to other users. The vulnerability was published on November 15, 2017, and a fix is available in version 0.49.0.
An attacker with local access to a system running vulnerable RuboCop versions can exploit this vulnerability to modify or delete cached files belonging to other users. This could lead to data corruption, unexpected behavior, or even the execution of malicious code if the cached files are used by other applications. The impact is limited to the local system and does not allow for remote code execution or network-based attacks. The ability to manipulate cached files could disrupt development workflows and potentially compromise the integrity of code being analyzed.
CVE-2017-8418 has a LOW CVSS score. There are no publicly known active campaigns exploiting this vulnerability. No evidence of exploitation in the wild has been reported. The vulnerability is not listed on KEV (Known Exploited Vulnerabilities) as of the current date. Public Proof-of-Concept (POC) code is not widely available, suggesting a relatively low exploitation probability.
Exploit Status
EPSS
0.06% (20% percentiel)
CVSS-vector
The primary mitigation for CVE-2017-8418 is to upgrade RuboCop to version 0.49.0 or later, which addresses the insecure /tmp usage. If upgrading is not immediately feasible, consider restricting access to the /tmp directory to prevent unauthorized modification of cached files. Implement strict file permissions and ownership to limit the impact of potential tampering. Regularly monitor the /tmp directory for suspicious file modifications. After upgrading, confirm the fix by running RuboCop and verifying that cached files are not accessible or modifiable by unauthorized users.
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CVE-2017-8418 is a vulnerability in RuboCop versions 0.48.1 and earlier that allows local users to tamper with cache files due to insecure /tmp usage, potentially leading to data corruption.
If you are using RuboCop version 0.9.1 or earlier, you are potentially affected by this vulnerability. Check your RuboCop version using rubocop --version.
Upgrade RuboCop to version 0.49.0 or later to resolve the vulnerability. If immediate upgrade isn't possible, restrict access to the /tmp directory.
There is no public evidence of CVE-2017-8418 being actively exploited in the wild, and no known campaigns targeting this vulnerability.
Refer to the RuboCop security advisories and release notes for details: https://github.com/rubocop/rubocop/security/advisories
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