Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1qd2gyLXZycjktdmNwMs4AAuiu

mz-avro's incorrect use of `set_len` allows for un-initialized memory

Affected versions of this crate passes an uninitialized buffer to a user-provided Read
implementation.

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.

Note: there is only UB in the case where a user provides a struct whose Read
implementation inspects the buffer passed to read_exact before writing to it.
This is an unidiomatic (albeit possible) Read implementation.

See https://github.com/MaterializeInc/materialize/issues/8669 for details.

Permalink: https://github.com/advisories/GHSA-jwh2-vrr9-vcp2
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1qd2gyLXZycjktdmNwMs4AAuiu
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 2 years ago
Updated: almost 2 years ago

Identifiers: GHSA-jwh2-vrr9-vcp2
References:

• https://github.com/MaterializeInc/materialize/issues/8669
• https://rustsec.org/advisories/RUSTSEC-2021-0138.html
• https://github.com/advisories/GHSA-jwh2-vrr9-vcp2

Repository: https://github.com/MaterializeInc/materialize
Blast Radius: 1.0

Affected Packages