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`Read` on uninitialized buffer may cause UB ( `read_entry()` )

High severity GitHub Reviewed Published Jun 16, 2022 to the GitHub Advisory Database • Updated Jan 12, 2023

Package

cargo flumedb (Rust)

Affected versions

< 0.1.6

Patched versions

0.1.6

Description

Affected versions of this crate passes an uninitialized buffer to a user-provided Read implementation.
There are two of such cases (go_offset_log::read_entry() & offset_log::read_entry()).

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

Published to the GitHub Advisory Database Jun 16, 2022
Reviewed Jun 16, 2022
Last updated Jan 12, 2023

Severity

High

Weaknesses

No CWEs

CVE ID

No known CVE

GHSA ID

GHSA-p56p-gq3f-whg8
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