Bug 1623174 (CVE-2018-15599) - CVE-2018-15599 dropbear: User enumeration via malformed packets in authentication requests
Summary: CVE-2018-15599 dropbear: User enumeration via malformed packets in authentica...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2018-15599
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1623176 1623177
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-08-28 16:16 UTC by Laura Pardo
Modified: 2019-09-29 14:57 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-10 10:37:02 UTC
Embargoed:

Attachments (Terms of Use)

Description Laura Pardo 2018-08-28 16:16:53 UTC 
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
Comment 1 Laura Pardo 2018-08-28 16:17:28 UTC 
Created dropbear tracking bugs for this issue:

Affects: epel-all [bug 1623177]
Affects: fedora-all [bug 1623176]
Comment 2 Product Security DevOps Team 2019-06-10 10:37:02 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
Note You need to log in before you can comment on or make changes to this bug.