CVE-2019-11251: Improper Link Resolution Before File Access

February 3, 2020 (updated February 6, 2020)

The Kubernetes kubectl cp command in versions allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.

References

nvd.nist.gov/vuln/detail/CVE-2019-11251

Code Behaviors & Features

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