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CVE-2018-15599
The recv_msg_userauth_request function in svr-auth.c in Dropbear through 2018.76 is prone to a user enumeration vulnerability because…
Medium5.3EPSS 2.7%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The recv_msg_userauth_request function in svr-auth.c in Dropbear through 2018.76 is prone to a user enumeration vulnerability because username validity affects how fields in SSH_MSG_USERAUTH messages are handled, a similar issue to CVE-2018-15473 in an unrelated codebase.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 2.7% · top 14% of all CVEs (3 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
n/a
- affected n/a
References (5)
- https://matt.ucc.asn.au/dropbear/CHANGES (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002109.html (opens in a new tab)x_refsource_MISCx_transferred
- http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.html (opens in a new tab)x_refsource_MISCx_transferred
- [debian-lts-announce] 20180827 [SECURITY] [DLA 1476-1] dropbear security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://old.reddit.com/r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/ (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2018-15599)Record last updated .