USN-2856-1: ldb vulnerabilities

Ubuntu Security Notice USN-2856-1

5th January, 2016

ldb vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 15.10
• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

Several security issues were fixed in ldb.

Software description

• ldb - LDAP-like embedded database

Details

Thilo Uttendorfer discovered that the ldb incorrectly handled certain zero
values. A remote attacker could use this issue to cause applications using
ldb, such as Samba, to stop responding, resulting in a denial of service.
(CVE-2015-3223)

Douglas Bagnall discovered that ldb incorrectly handled certain string
lengths. A remote attacker could use this issue to possibly access
sensitive information from memory of applications using ldb, such as Samba.
(CVE-2015-5330)

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 15.10:

libldb1 2:1.1.20-2ubuntu0.1

Ubuntu 15.04:

libldb1 1:1.1.18-1ubuntu0.1

Ubuntu 14.04 LTS:

libldb1 1:1.1.16-1ubuntu0.1

Ubuntu 12.04 LTS:

libldb1 1:1.1.4-1ubuntu0.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart applications using ldb,
such as Samba, to make all the necessary changes.

References

CVE-2015-3223, CVE-2015-5330