CVE-2015-3223

Publication date 16 December 2015

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

The ldb_wildcard_compare function in ldb_match.c in ldb before 1.1.24, as used in the AD LDAP server in Samba 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, mishandles certain zero values, which allows remote attackers to cause a denial of service (infinite loop) via crafted packets.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ldb	17.04 zesty	Fixed 2:1.1.24-1ubuntu1
	16.10 yakkety	Fixed 2:1.1.24-1ubuntu1
	16.04 LTS xenial	Fixed 2:1.1.24-1ubuntu1
	15.10 wily	Fixed 2:1.1.20-2ubuntu0.1
	15.04 vivid	Fixed 1:1.1.18-1ubuntu0.1
	14.04 LTS trusty	Fixed 1:1.1.16-1ubuntu0.1
	12.04 LTS precise	Fixed 1:1.1.4-1ubuntu0.1
samba	17.04 zesty	Fixed 2:4.3.3+dfsg-1ubuntu1
	16.10 yakkety	Fixed 2:4.3.3+dfsg-1ubuntu1
	16.04 LTS xenial	Fixed 2:4.3.3+dfsg-1ubuntu1
	15.10 wily	Fixed 2:4.1.17+dfsg-4ubuntu3.1
	15.04 vivid	Fixed 2:4.1.13+dfsg-4ubuntu3.1
	14.04 LTS trusty	Fixed 2:4.1.6+dfsg-1ubuntu2.14.04.11
	12.04 LTS precise	Not affected
samba4	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Ignored

Notes

mdeslaur

says 4.0.0 to 4.3.2, need to check precise may require ldb update

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
samba	Upstream: https://git.samba.org/?p=samba.git;a=commit;h=fb456954f332c07a645226d59b3b00ec252f8b26 Upstream: https://git.samba.org/?p=samba.git;a=commit;h=bb1b783ee9d7259cfc6a1fe882f22189747f8684

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L