PT-2021-22492 · Unknown · Zint Barcode Generator

Jan Schrewe · Published 2021-08-17 · Updated 2021-08-25 · CVE-2021-39247

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Zint Barcode Generator versions prior to 2.10.0

Description The issue is related to a one-byte buffer over-read in the Zint Barcode Generator. This is connected to the is last single ascii function in code1.c and the rs encode uint function in reedsol.c.

Recommendations For versions prior to 2.10.0, update to version 2.10.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the functions is last single ascii and rs encode uint until a patch is available.

Exploit

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2021-39247

Affected Products

Zint Barcode Generator

References · 8

• 🔥 https://sourceforge.net/p/zint/tickets/232 · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-39247 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-39247 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39247 · Vendor Advisory
• https://sourceforge.net/p/zint/code/ci/9b02cd52214e80f945bff41fc94bc1e17e15810c · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-39247 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-39247 · Security Note
• https://t.me/cvenotify/20054 · Telegram Post