Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWZodmMtZ3A2Yy1oMnd4

Read on uninitialized buffer in postscript

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.

This flaw was fixed in commit 8026286 by zero-initializing the buffer before handing to a user-provided Read.

Permalink: https://github.com/advisories/GHSA-fhvc-gp6c-h2wx
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWZodmMtZ3A2Yy1oMnd4
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: 11 months ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Identifiers: GHSA-fhvc-gp6c-h2wx, CVE-2021-26953
References:

• https://nvd.nist.gov/vuln/detail/CVE-2021-26953
• https://github.com/bodoni/postscript/issues/1
• https://rustsec.org/advisories/RUSTSEC-2021-0017.html
• https://github.com/bodoni/postscript/commit/8026286
• https://github.com/advisories/GHSA-fhvc-gp6c-h2wx

Repository: https://github.com/bodoni/postscript
Blast Radius: 10.4

Affected Packages