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CVE-2015-5296

Published: 16 December 2015

Samba 3.x and 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3 supports connections that are encrypted but unsigned, which allows man-in-the-middle attackers to conduct encrypted-to-unencrypted downgrade attacks by modifying the client-server data stream, related to clidfs.c, libsmb_server.c, and smbXcli_base.c.

Notes

AuthorNote
mdeslaur
3.2.0 to 4.3.2
3.6 patch in upstream bug

Priority

Medium

CVSS 3 base score: 5.4

Status

Package Release Status
samba
Launchpad, Ubuntu, Debian
precise
Released (2:3.6.3-2ubuntu2.13)
trusty
Released (2:4.1.6+dfsg-1ubuntu2.14.04.11)
upstream
Released (4.3.3,4.2.7,4.1.22)
vivid
Released (2:4.1.13+dfsg-4ubuntu3.1)
wily
Released (2:4.1.17+dfsg-4ubuntu3.1)
xenial
Released (2:4.3.3+dfsg-1ubuntu1)
yakkety
Released (2:4.3.3+dfsg-1ubuntu1)
zesty
Released (2:4.3.3+dfsg-1ubuntu1)
Patches:
upstream: https://git.samba.org/?p=samba.git;a=commit;h=d9e943e351a752ba627314da7fb8d2f6f1eb44b3 (4.1)
upstream: https://git.samba.org/?p=samba.git;a=commit;h=4c3a492259ceefe3d02df690d4369291627883a2 (4.1)
upstream: https://git.samba.org/?p=samba.git;a=commit;h=c634a143a876bd5a724d830c54fe12ef6d68d5fd (4.1)
samba4
Launchpad, Ubuntu, Debian
precise Does not exist
(precise was needed)
trusty Does not exist

upstream
Released (4.3.3,4.2.7,4.1.22)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist