PT-2020-9351 · Dropbear+1 · Dropbear+1

Published 2020-12-30 · Updated 2024-05-03 · CVE-2019-12953

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Dropbear versions 2011.54 through 2018.76

Description: The issue is related to an inconsistent failure delay that may lead to revealing valid usernames.

Recommendations: For versions 2011.54 through 2018.76, update to a version that addresses this issue to prevent revealing valid usernames. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Side Channel Attack

Weakness Enumeration

CWE-203

Related Identifiers

ALT-PU-2022-2113

ALT-PU-2024-4252

ALT-PU-2024-7377

BDU:2025-13193

CVE-2019-12953

Affected Products

Alt Linux

Dropbear

References · 11

• https://nvd.nist.gov/vuln/detail/CVE-2019-12953 · Security Note
• https://cve.org/CVERecord?id=CVE-2019-12953 · Security Note
• https://ubuntu.com/security/CVE-2019-12953 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-12953 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-12953 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-12953 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-13193 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-12953 · Vendor Advisory
• https://matt.ucc.asn.au/dropbear/CHANGES · Note
• https://t.me/cvenotify/7980 · Telegram Post
• https://hg.ucc.asn.au/dropbear/rev/228b086794b7 · Note