CVE-2018-15599
published 2018-08-21CVE-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…
PriorityP427medium5.3CVSS 3.0
AVNACLPRNUINSUCLINAN
EPSS
2.71%
84.1th percentile
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.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | dropbear | < dropbear 2019.78-1 (bookworm) | dropbear 2019.78-1 (bookworm) |
| debian | dropbear | < dropbear 2018.76-4 (bookworm) | dropbear 2018.76-4 (bookworm) |
| dropbear_ssh_project | dropbear_ssh | <= 2018.76 | — |
| dropbear_ssh_project | dropbear_ssh | >= 0 < 2018.76-4 | 2018.76-4 |
| dropbear_ssh_project | dropbear_ssh | >= 0 < 2019.78-1 | 2019.78-1 |
| dropbear_ssh_project | dropbear_ssh | >= 0 < 2018.76-4 | 2018.76-4 |
| dropbear_ssh_project | dropbear_ssh | >= 0 < 2019.78-1 | 2019.78-1 |
| dropbear_ssh_project | dropbear_ssh | >= 0 < 2018.76-4 | 2018.76-4 |
| dropbear_ssh_project | dropbear_ssh | >= 0 < 2019.78-1 | 2019.78-1 |
| dropbear_ssh_project | dropbear_ssh | >= 0 < 2018.76-4 | 2018.76-4 |
| dropbear_ssh_project | dropbear_ssh | >= 0 < 2019.78-1 | 2019.78-1 |
| dropbear_ssh_project | dropbear_ssh | 2011.54 – 2018.76 | — |
CVSS provenance
nvdv3.05.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
osv5.3MEDIUM
vendor_debian5.3MEDIUM
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GHSA
GHSA-6hj9-w8vp-p698: Dropbear 2011
ghsa_unreviewed·2022-05-24·CVSS 5.3
CVE-2019-12953 [MEDIUM] CWE-200 GHSA-6hj9-w8vp-p698: Dropbear 2011
Dropbear 2011.54 through 2018.76 has an inconsistent failure delay that may lead to revealing valid usernames, a different issue than CVE-2018-15599.
GHSA
GHSA-g4h3-rm2q-r287: The recv_msg_userauth_request function in svr-auth
ghsa_unreviewed·2022-05-13·CVSS 5.3
CVE-2018-15599 [MEDIUM] CWE-200 GHSA-g4h3-rm2q-r287: The recv_msg_userauth_request function in svr-auth
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.
OSV
CVE-2019-12953: Dropbear 2011
osv·2020-12-30·CVSS 5.3
CVE-2019-12953 [MEDIUM] CVE-2019-12953: Dropbear 2011
Dropbear 2011.54 through 2018.76 has an inconsistent failure delay that may lead to revealing valid usernames, a different issue than CVE-2018-15599.
OSV
CVE-2018-15599: The recv_msg_userauth_request function in svr-auth
osv·2018-08-21·CVSS 5.3
CVE-2018-15599 [MEDIUM] CVE-2018-15599: The recv_msg_userauth_request function in svr-auth
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.
Debian
CVE-2019-12953: dropbear - Dropbear 2011.54 through 2018.76 has an inconsistent failure delay that may lead...
vendor_debian·2019·CVSS 5.3
CVE-2019-12953 [MEDIUM] CVE-2019-12953: dropbear - Dropbear 2011.54 through 2018.76 has an inconsistent failure delay that may lead...
Dropbear 2011.54 through 2018.76 has an inconsistent failure delay that may lead to revealing valid usernames, a different issue than CVE-2018-15599.
Scope: local
bookworm: resolved (fixed in 2019.78-1)
bullseye: resolved (fixed in 2019.78-1)
forky: resolved (fixed in 2019.78-1)
sid: resolved (fixed in 2019.78-1)
trixie: resolved (fixed in 2019.78-1)
Debian
CVE-2018-15599: dropbear - The recv_msg_userauth_request function in svr-auth.c in Dropbear through 2018.76...
vendor_debian·2018·CVSS 5.3
CVE-2018-15599 [MEDIUM] CVE-2018-15599: dropbear - The recv_msg_userauth_request function in svr-auth.c in Dropbear through 2018.76...
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.
Scope: local
bookworm: resolved (fixed in 2018.76-4)
bullseye: resolved (fixed in 2018.76-4)
forky: resolved (fixed in 2018.76-4)
sid: resolved (fixed in 2018.76-4)
trixie: resolved (fixed in 2018.76-4)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2018-15599 dropbear: User enumeration via malformed packets in authentication requests [fedora-all]
bugzilla·2018-08-28·CVSS 5.3
CVE-2018-15599 [MEDIUM] CVE-2018-15599 dropbear: User enumeration via malformed packets in authentication requests [fedora-all]
CVE-2018-15599 dropbear: User enumeration via malformed packets in authentication requests [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects m
Bugzilla
CVE-2018-15599 dropbear: User enumeration via malformed packets in authentication requests
bugzilla·2018-08-28·CVSS 5.3
CVE-2018-15599 [MEDIUM] CVE-2018-15599 dropbear: User enumeration via malformed packets in authentication requests
CVE-2018-15599 dropbear: User enumeration via malformed packets in authentication requests
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.
References:
http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.html
Upstream Patch:
https://secure.ucc.asn.au/hg/dropbear/rev/5d2d1021ca00
Discussion:
Created dropbear tracking bugs for this issue:
Affects: epel-all [bug 1623177]
Affects: fedora-all [bug 1623176]
---
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat p
Bugzilla
CVE-2018-15599 dropbear: User enumeration via malformed packets in authentication requests [epel-all]
bugzilla·2018-08-28·CVSS 5.3
CVE-2018-15599 [MEDIUM] CVE-2018-15599 dropbear: User enumeration via malformed packets in authentication requests [epel-all]
CVE-2018-15599 dropbear: User enumeration via malformed packets in authentication requests [epel-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multi
http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.htmlhttp://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002109.htmlhttps://lists.debian.org/debian-lts-announce/2018/08/msg00026.htmlhttps://matt.ucc.asn.au/dropbear/CHANGEShttps://old.reddit.com/r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.htmlhttp://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002109.htmlhttps://lists.debian.org/debian-lts-announce/2018/08/msg00026.htmlhttps://matt.ucc.asn.au/dropbear/CHANGEShttps://old.reddit.com/r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/
2018-08-21
Published