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GHSA-9mp7-45qh-r8j8

columnar: Read on uninitialized buffer may cause UB (ColumnarReadExt::read_typed_vec())

Source: GitHub Advisory Database (reviewed) Critical CVE-2021-45685

Packages

EcosystemPackageAffectedFixed in
crates.io columnar <= 0.0.19 no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

Affected versions of this crate passes an uninitialized buffer to a user-provided Read implementation (ColumnarReadExt::read_typed_vec()). Arbitrary Read implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer. Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.

References

External links from the advisory. They lead to third-party sites.