PT-2017-18689 · Dropbear+1 · Dropbear+1

Published 2017-05-18 · Updated 2022-07-11 · CVE-2017-9078

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Dropbear versions prior to 2017.75

Description The issue allows post-authentication root remote code execution due to a double free in cleanup of TCP listeners when the -a option is enabled. This affects the server in Dropbear.

Recommendations For versions prior to 2017.75, update to version 2017.75 or later to resolve the issue. As a temporary workaround, consider disabling the -a option to minimize the risk of exploitation.

Fix

RCE

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

ALT-PU-2017-1666

BDU:2025-13196

CVE-2017-9078

DSA-3859-1

MGASA-2017-0165

Affected Products

Alt Linux

Dropbear

References · 19

• https://nvd.nist.gov/vuln/detail/CVE-2017-9078 · Security Note
• http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2017q2/001985.html · Patch
• https://osv.dev/vulnerability/ALPINE-CVE-2017-9078 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3859-1 · Vendor Advisory
• http://debian.org/security/2017/dsa-3859 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2017-0165 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-13196 · Security Note
• https://ubuntu.com/security/CVE-2017-9078 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-9078 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0165.html · Security Note
• https://cve.org/CVERecord?id=CVE-2017-9078 · Security Note
• https://osv.dev/vulnerability/CVE-2017-9078 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-9078 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-9078 · Vendor Advisory
• https://bugs.mageia.org/show_bug.cgi?id=20901 · Note