RUSTSEC-2021-0112

    Dashboard / Vulnerabilities / RUSTSEC-2021-0112

    RUSTSEC-2021-0112

    Published: 17 Feb 2021Last Modified: 8 Nov 2023

    Summary: `Read` on uninitialized buffer may cause UB ('tectonic_xdv' crate)

    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. The problem was fixed in commit `cdff034` by zero-initializing the buffer before passing it to a user-provided `Read` implementation.

    References: https://crates.io/crates/tectonic_xdv, https://rustsec.org/advisories/RUSTSEC-2021-0112.html, https://github.com/tectonic-typesetting/tectonic/issues/752

    Affected packages

    Package

    Name: tectonic_xdv

    Purl: pkg:cargo/tectonic_xdv

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0.0.0-0
    Fixed -0.1.12

    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-2021-0112 | CVE-DB