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CVE-2015-3223

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 201612-47
Posted Dec 24, 2016
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201612-47 - Multiple vulnerabilities have been found in Samba, the worst of which may allow execution of arbitrary code with root privileges. Versions less than 4.2.11 are affected.

tags | advisory, arbitrary, root, vulnerability
systems | linux, gentoo
advisories | CVE-2015-3223, CVE-2015-5252, CVE-2015-5296, CVE-2015-5299, CVE-2015-5330, CVE-2015-7540, CVE-2015-8467, CVE-2016-2110, CVE-2016-2111, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, CVE-2016-2115, CVE-2016-2118
SHA-256 | a90feb7fa58b657e989e89a4f6c40472eeed2dc783afe5dad3b3e0c77040f948
Ubuntu Security Notice USN-2855-2
Posted Feb 16, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2855-2 - USN-2855-1 fixed vulnerabilities in Samba. The upstream fix for CVE-2015-5252 introduced a regression in certain specific environments. This update fixes the problem.

tags | advisory, vulnerability
systems | linux, ubuntu
advisories | CVE-2015-3223, CVE-2015-5252, CVE-2015-5296, CVE-2015-5299, CVE-2015-5330, CVE-2015-7540, CVE-2015-8467
SHA-256 | 7086d756a9e42b4c4cfa8d6023f2eaf650513adb4854120cd3732d1c818288b0
Red Hat Security Advisory 2016-0009-01
Posted Jan 8, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0009-01 - The libldb packages provide an extensible library that implements an LDAP-like API to access remote LDAP servers, or use local TDB databases. A denial of service flaw was found in the ldb_wildcard_compare() function of libldb. A remote attacker could send a specially crafted packet that, when processed by an application using libldb, would cause that application to consume an excessive amount of memory and crash. A memory-read flaw was found in the way the libldb library processed LDB DN records with a null byte. An authenticated, remote attacker could use this flaw to read heap-memory pages from the server.

tags | advisory, remote, denial of service, local
systems | linux, redhat
advisories | CVE-2015-3223, CVE-2015-5330
SHA-256 | 7744b8e0626a8901ae916b7e2470b53a173f787163b7b9145e30b729863d1bea
Red Hat Security Advisory 2016-0014-01
Posted Jan 8, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0014-01 - The libldb packages provide an extensible library that implements an LDAP-like API to access remote LDAP servers, or use local TDB databases. A denial of service flaw was found in the ldb_wildcard_compare() function of libldb. A remote attacker could send a specially crafted packet that, when processed by an application using libldb, would cause that application to consume an excessive amount of memory and crash. A memory-read flaw was found in the way the libldb library processed LDB DN records with a null byte. An authenticated, remote attacker could use this flaw to read heap-memory pages from the server.

tags | advisory, remote, denial of service, local
systems | linux, redhat
advisories | CVE-2015-3223, CVE-2015-5330
SHA-256 | b68687782b26d57dd2c5e68c3efd3463fe80d9a646ae0980128e2a9152d079f3
Ubuntu Security Notice USN-2856-1
Posted Jan 5, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2856-1 - 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. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2015-3223, CVE-2015-5330
SHA-256 | 06bff63b4bcbbd739e856db003c4656d0fe21fde784af34dc73fb6bb7e9d35ae
Ubuntu Security Notice USN-2855-1
Posted Jan 5, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2855-1 - Thilo Uttendorfer discovered that the Samba LDAP server incorrectly handled certain packets. A remote attacker could use this issue to cause the LDAP server to stop responding, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 15.04 and Ubuntu 15.10. Jan Kasprzak discovered that Samba incorrectly handled certain symlinks. A remote attacker could use this issue to access files outside the exported share path. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2015-3223, CVE-2015-5252, CVE-2015-5296, CVE-2015-5299, CVE-2015-5330, CVE-2015-7540, CVE-2015-8467
SHA-256 | 18d6b6eab4573732c5916ffb8324e2969fbb471ee55086f434a7c90629cc7e91
Debian Security Advisory 3433-1
Posted Jan 4, 2016
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3433-1 - Several vulnerabilities have been discovered in Samba, a SMB/CIFS file, print, and login server for Unix.

tags | advisory, vulnerability
systems | linux, unix, debian
advisories | CVE-2015-3223, CVE-2015-5252, CVE-2015-5296, CVE-2015-5299, CVE-2015-5330, CVE-2015-7540, CVE-2015-8467
SHA-256 | da40f13d97d8facd68b0ff64d9a27c59443e12f77dc68a7c5873f1d049f3cd63
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