CVE-2015-5252

Publication date 16 December 2015

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.2 · High

Score breakdown

vfs.c in smbd in 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, when share names with certain substring relationships exist, allows remote attackers to bypass intended file-access restrictions via a symlink that points outside of a share.

Read the notes from the security team

Status

Package Ubuntu Release Status
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
Fixed 2:3.6.3-2ubuntu2.13
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 end of life

Notes

mdeslaur

says 3.0.0 to 4.3.2 3.6 patch in upstream bug original patch introduced a regression, see usn-2855-2

Patch details

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

Package Patch details
samba

Severity score breakdown

Parameter Value
Base score 7.2 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

Other references