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CVE-2015-7540

Published: 16 December 2015

The LDAP server in the AD domain controller in Samba 4.x before 4.1.22 does not check return values to ensure successful ASN.1 memory allocation, which allows remote attackers to cause a denial of service (memory consumption and daemon crash) via crafted packets.

Notes

AuthorNote
mdeslaur
says 4.0.0 to 4.1.21

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
samba
Launchpad, Ubuntu, Debian
precise Not vulnerable
(2:3.6.3-2ubuntu2.12)
trusty
Released (2:4.1.6+dfsg-1ubuntu2.14.04.11)
upstream
Released (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=530d50a1abdcdf4d1775652d4c456c1274d83d8d (4.1)
upstream: https://git.samba.org/?p=samba.git;a=commit;h=9d989c9dd7a5b92d0c5d65287935471b83b6e884 (4.1)
samba4
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.1.22)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H