VulnerabilityModified
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 username validity affects how fields in SSH_MSG_USERAUTH messages are handled, a similar issue to CVE-2018-15473 in an…
MEDIUM 5.3EPSS 2.69%
Does this matter?
Lower severity and a low EPSS score (2.69%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 2.69% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- debian/debian linux · dropbear ssh project/dropbear ssh
- Source
- cve@mitre.org
References
- http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.htmlMailing List, Third Party Advisory
- http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002109.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/08/msg00026.htmlMailing List, Third Party Advisory
- https://matt.ucc.asn.au/dropbear/CHANGES
- https://old.reddit.com/r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/Third Party Advisory
- http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.htmlMailing List, Third Party Advisory
- http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002109.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/08/msg00026.htmlMailing List, Third Party Advisory
- https://matt.ucc.asn.au/dropbear/CHANGES
- https://old.reddit.com/r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.