vulnwire
5.3med

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 usern…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
5.3
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
2.7%
percentile 86%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

2.69% probability of exploitation in the next 30 days, higher than 86% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.05.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD2.05.0AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

  • matt.ucc.asn.au /dropbear/CHANGES · x_refsource_CONFIRM, x_transferred
  • lists.ucc.gu.uwa.edu.au /pipermail/dropbear/2018q3/002109.html · x_refsource_MISC, x_transferred
  • lists.ucc.gu.uwa.edu.au /pipermail/dropbear/2018q3/002108.html · x_refsource_MISC, x_transferred
  • lists.debian.org /debian-lts-announce/2018/08/msg00026.html · mailing-list, x_refsource_MLIST, x_transferred
  • old.reddit.com /r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/ · x_refsource_MISC, x_transferred

Sources

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