GitHub Advisoryadvisory · crates.io

GHSA-qwvx-c8j7-5g75 Use of Uninitialized Resource in tectonic_xdv

CRITICAL Published 2022-01-06 Modified 2023-06-13 Official page ↗
Aliases
CVE-2021-45703
Ecosystem
crates.io
Packages
tectonic_xdv
Severity
Critical
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-908
Reviewed
2022-01-05

Affected packages

• crates.io tectonic_xdv: < 0.1.12 → fixed in 0.1.12

Description

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.

Related

Alias · CVE (1)

  • CVE-2021-45703 An issue was discovered in the tectonic_xdv crate before 0.1.12 for Rust. vulnerability

Weakness · CWE (1)

  • CWE-908 Use of Uninitialized Resource weakness

References