Attachment 14975 Details for Bug 13851 – draft of advisory (v1)

draft of advisory (v1)

CVE-2019-3880-advisory-01.txt (text/plain), 1.53 KB, created by Andrew Bartlett on 2019-03-21 23:36:38 UTC

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Creator: Andrew Bartlett

Created: 2019-03-21 23:36:38 UTC

Size: 1.53 KB

patch

obsolete

>===========================================================
>== Subject:     Save registry file outside share as unprivileged user
>==
>== CVE ID#:     CVE-2019-3880
>==
>== Versions:    All versions of Samba since before Samba 3.x
>==
>== Summary:     Authenticated users with write permission
>                can trigger a symlink traversal to write
>		files outside the Samba share.
>===========================================================
>
>===========
>Description
>===========
>
>Samba contains an RPC endpoint emulating the Windows registry service
>API. One of the requests, "winreg_SaveKey", is susceptible to a
>path/symlink traversal vulnerability. Unprivileged users can use it to
>save a registry hive file anywhere they have write access, even
>outside a Samba share.
>
>
>==================
>Patch Availability
>==================
>
>Patches addressing both these issues have been posted to:
>
>    http://www.samba.org/samba/security/
>
>Additionally, Samba $VERSIONS have been issued
>as security releases to correct the defect.  Samba administrators are
>advised to upgrade to these releases or apply the patch as soon
>as possible.
>
>==================
>CVSSv3 calculation
>==================
>
>CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N (5.4)
>
>==========
>Workaround
>==========
>
>
>=======
>Credits
>=======
>
>Originally reported by Michael Hanselmann.
>
>Patches provided by $DEVELOPER of the Samba team.
>
>==========================================================
>== Our Code, Our Bugs, Our Responsibility.
>== The Samba Team
>==========================================================
>

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