Information disclosure through error messages in [UNKNOWN] dropbear
Priority LOW 36CWE-209Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure, Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-209 and CWE-287.
Summary
It was found that dropbear before version 2013.59 with GSSAPI leaks whether given username is valid or invalid. When an invalid username is given, the GSSAPI authentication failure was incorrectly counted towards the maximum allowed number of password attempts.
Why it matters now
EPSS 0.01505 74th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| [UNKNOWN] | dropbear | fixed in 2013.59 | — | No fix listed | CNA |
- dropbear Vendor[UNKNOWN] Affected fixed in 2013.59 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:* | before 2013.59 | Vulnerable | Dropbear SSH Project |
- cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:* Versions before 2013.59 Vulnerable ·Dropbear SSH Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2017-2659
- 2026-10-03 Alias added: GHSA-m7fh-9pv8-fwc2
References
More Dropbear SSH Project Dropbear Ssh vulnerabilities
- TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
- TI-2016-06307 Format string vulnerability in Dropbear SSH before 2016.74 allows remote attackers to… CVSS 3.0CRITICAL 9.8
- TI-2016-06308 The dropbearconvert command in Dropbear SSH before 2016.74 allows attackers to execute… CVSS 3.0CRITICAL 9.8
- TI-2016-02614 CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated… CVSS 3.0MEDIUM 6.4
- TI-2017-06540 The server in Dropbear before 2017.75 might allow post-authentication root remote code… CVSS 3.1HIGH 8.8
- TI-2016-06309 The dbclient in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary… CVSS 3.0HIGH 8.8
Sources
- CVE-2017-2659 · CVE Program
- CVE-2017-2659 · NVD
- FIRST EPSS
- GHSA-m7fh-9pv8-fwc2 · GitHub Advisory Database · CC BY 4.0
- CVE-2017-2659 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences