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mail-internals use-after-free vulnerability in `vec_insert_bytes`

Moderate severity GitHub Reviewed Published Aug 24, 2023 to the GitHub Advisory Database • Updated Aug 24, 2023

Package

cargo mail-internals (Rust)

Affected versions

>= 0.2.0, <= 0.2.3

Patched versions

None

Description

Incorrect reallocation logic in the function vec_insert_bytes causes a use-after-free.

This function does not have to be called directly to trigger the vulnerability because many methods on EncodingWriter call this function internally.

The mail-* suite is unmaintained and the upstream sources have been actively vandalised.
A fixed mail-internals-ng (and mail-headers-ng and mail-core-ng) crate has been published which fixes this, and a dependency on another unsound crate.

References

Published to the GitHub Advisory Database Aug 24, 2023
Reviewed Aug 24, 2023
Last updated Aug 24, 2023

Severity

Moderate

Weaknesses

No CWEs

CVE ID

No known CVE

GHSA ID

GHSA-rcx8-48pc-v9q8

Source code

No known source code
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