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700+ self-hosted Git instances battered in 0-day attacks with no fix imminent
(www.theregister.com)
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this post was submitted on 10 Dec 2025
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amazing.
Especially since any version of Git from the last view years has a passionate hatred of symlinks for this reason, which is a bit annoying if you've a legit usecase. They're either very out-of-date, or have done some very foolish customisation...
I think the ZIP standard has something similar and it causes similar problems.
It's because of the old notion of "be generous in what you accept and strict in what you send". I think the error is something about adding more parent directories so that part of your zip file will be extracted above the selected directory. Not all implementations of zip support this "feature".
There are also all kinds of stupid ancient features in tar and zip from a time when hard drives were measured in megabytes or less. The latest episode of the open source security podcast talks about it.