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▲ cogman10 2 days ago

Right, so long as step 1 in reading your file isn't "extract everything" you're pretty safe.

This specific exploit is one that only exists when you are extracting a zip on windows.

▲boston_clone 2 days ago | parent [-]

this is just one instance of a vulnerability associated with unzipping; a curious search would yield more.

▲cogman10 2 days ago | parent [-]

A curious search reveals that vulnerabilities that do exist are of 2 flavors.

1. Standard C memory vulnerabilities

2. Unsafe file traversal while unzipping

The entire second class is avoided in a fixed file format. The first class of vulnerabilities plague everything. A quick look at libxml2 CVEs shows that.

▲boston_clone a day ago | parent [-]

and the zip bombs you mentioned! i keep a dummy SD card with one hehe.

but yeah the first class of vulns is why we have advice like don’t run untrusted input, which is not dissimilar to “don’t unzip untrusted payloads”.