RUSTSEC-2021-0138

    Dashboard / Vulnerabilities / RUSTSEC-2021-0138

    RUSTSEC-2021-0138

    Published: 14 Oct 2021Last Modified: 8 Nov 2023

    Summary: Incorrect use of `set_len` allows for un-initialized memory

    Details: 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.

    References: https://crates.io/crates/mz-avro, https://rustsec.org/advisories/RUSTSEC-2021-0138.html, https://github.com/MaterializeInc/materialize/issues/8669

    Affected packages

    Package

    Name: mz-avro

    Purl: pkg:cargo/mz-avro

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0.0.0-0
    Fixed -0.7.0

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    RUSTSEC-2021-0138 | CVE-DB