PT-2022-12945 · Alpine+3 · Alpine+3

John Helmert Iii · Published 2022-11-03 · Updated 2025-03-20 · CVE-2021-46853

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Alpine versions prior to 2.25

Description The issue allows remote attackers to cause a denial of service, resulting in an application or daemon crash, when the LIST or LSUB command is sent before STARTTLS.

Recommendations For versions prior to 2.25, update to version 2.25 or later to resolve the issue. As a temporary workaround, consider restricting the use of the LIST and LSUB commands before STARTTLS to minimize the risk of exploitation.

Fix

DoS

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2021-46853

USN-7360-1

Affected Products

Alpine

Debian

Linuxmint

Ubuntu

References · 17

• https://nvd.nist.gov/vuln/detail/CVE-2021-46853 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-46853 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7360-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-46853 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-46853 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-38370 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-46853 · Vendor Advisory
• https://security.gentoo.org/glsa/202301-07 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-46853 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-46853 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-14929 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7360-1 · Vendor Advisory
• https://t.me/cibsecurity/52498 · Telegram Post
• https://bugs.gentoo.org/807613 · Note
• https://t.me/cvenotify/45259 · Telegram Post