CVE-2017-2659 json
It was found that dropbear before version 2013.59 with GSSAPI leaks whether given username is valid or invalid.
published 2019-03-20 7 y ago modified 2026-06-17 4 mo ago also EUVD-2017-11807
- cvss
- 5.3
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
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.
Patch / fix
- dropbear_ssh_project dropbear_ssh 2013.59
- dropbear Debian 14, Debian 13, Debian 12 2013.60-1
debian advisories DEBIAN-CVE-2017-2659
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2017-2659 updated cvss 5.3
dropbear: Information leak when given invalid username
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
1.50% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- [UNKNOWN] dropbear
Classification
References
-
bugzilla.redhat.com
/show_bug.cgi?id=CVE-2017-2659
issue-tracking, patch, third-party-advisory
-
secure.ucc.asn.au
/hg/dropbear/rev/d7784616409a#l1.86
patch, third-party-advisory
Sources
- CVE List CVE-2017-2659
- NVD CVE-2017-2659
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.