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CVE-2015-5252

Status Candidate

Overview

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.

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
HP Security Bulletin HPSBUX03574 1
Posted May 11, 2016
Authored by HP | Site hp.com

HP Security Bulletin HPSBUX03574 1 - Potential security vulnerabilities have been identified with HP-UX CIFS-Server (Samba). The vulnerabilities could be exploited remotely to cause access restriction bypass, authentication bypass, Denial of Service (DoS), unauthorized access to files, access restriction bypass, or unauthorized information disclosure. Revision 1 of this advisory.

tags | advisory, denial of service, vulnerability, info disclosure
systems | hpux
advisories | CVE-2013-0213, CVE-2013-0214, CVE-2013-4475, CVE-2013-4496, CVE-2014-0178, CVE-2014-0244, CVE-2014-3493, CVE-2015-5252, CVE-2015-5296, CVE-2015-5299
SHA-256 | 3425ca46ec9693308573785c2ac516d648f5b8e32172b2e8f2ba16ba7c8482b9
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 2016-0010-02
Posted Jan 8, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0010-02 - Samba is an open-source implementation of the Server Message Block or Common Internet File System protocol, which allows PC-compatible machines to share files, printers, and other information. A denial of service flaw was found in the LDAP server provided by the AD DC in the Samba process daemon. A remote attacker could exploit this flaw by sending a specially crafted packet, which could cause the server to consume an excessive amount of memory and crash. Multiple buffer over-read flaws were found in the way Samba handled malformed inputs in certain encodings. An authenticated, remote attacker could possibly use these flaws to disclose portions of the server memory.

tags | advisory, remote, denial of service, protocol
systems | linux, redhat
advisories | CVE-2015-5252, CVE-2015-5296, CVE-2015-5299, CVE-2015-5330, CVE-2015-7540
SHA-256 | 89f20e4822a7bbff9cbe595e4c9b7e262ec003f61ce60cf39cc4b99cb1dc736d
Red Hat Security Advisory 2016-0011-01
Posted Jan 8, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0011-01 - Samba is an open-source implementation of the Server Message Block or Common Internet File System protocol, which allows PC-compatible machines to share files, printers, and other information. A man-in-the-middle vulnerability was found in the way "connection signing" was implemented by Samba. A remote attacker could use this flaw to downgrade an existing Samba client connection and force the use of plain text. A missing access control flaw was found in Samba. A remote, authenticated attacker could use this flaw to view the current snapshot on a Samba share, despite not having DIRECTORY_LIST access rights.

tags | advisory, remote, protocol
systems | linux, redhat
advisories | CVE-2015-5252, CVE-2015-5296, CVE-2015-5299
SHA-256 | 7361a87b868abd0536a182c1d2a161d23034925d598dfdc4ced441e5d36afe5a
Red Hat Security Advisory 2016-0016-01
Posted Jan 8, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0016-01 - Samba is an open-source implementation of the Server Message Block or Common Internet File System protocol, which allows PC-compatible machines to share files, printers, and other information. A man-in-the-middle vulnerability was found in the way "connection signing" was implemented by Samba. A remote attacker could use this flaw to downgrade an existing Samba client connection and force the use of plain text. A missing access control flaw was found in Samba. A remote, authenticated attacker could use this flaw to view the current snapshot on a Samba share, despite not having DIRECTORY_LIST access rights.

tags | advisory, remote, protocol
systems | linux, redhat
advisories | CVE-2015-5252, CVE-2015-5296, CVE-2015-5299, CVE-2015-5330
SHA-256 | 1d8ff6e2ba56dc079e6a794292cbc443fa3729c3047b4fa27c6998e53fc0bfc1
Red Hat Security Advisory 2016-0015-01
Posted Jan 8, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0015-01 - Samba is an open-source implementation of the Server Message Block or Common Internet File System protocol, which allows PC-compatible machines to share files, printers, and other information. A man-in-the-middle vulnerability was found in the way "connection signing" was implemented by Samba. A remote attacker could use this flaw to downgrade an existing Samba client connection and force the use of plain text. A missing access control flaw was found in Samba. A remote, authenticated attacker could use this flaw to view the current snapshot on a Samba share, despite not having DIRECTORY_LIST access rights.

tags | advisory, remote, protocol
systems | linux, redhat
advisories | CVE-2015-5252, CVE-2015-5296, CVE-2015-5299, CVE-2015-5330, CVE-2015-7540
SHA-256 | e7476774b5f9c85270690826f5f1e544dc5c73fbe57f70b44735340d28740d81
Red Hat Security Advisory 2016-0006-01
Posted Jan 8, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0006-01 - Samba is an open-source implementation of the Server Message Block or Common Internet File System protocol, which allows PC-compatible machines to share files, printers, and other information. A denial of service flaw was found in the LDAP server provided by the AD DC in the Samba process daemon. A remote attacker could exploit this flaw by sending a specially crafted packet, which could cause the server to consume an excessive amount of memory and crash. Multiple buffer over-read flaws were found in the way Samba handled malformed inputs in certain encodings. An authenticated, remote attacker could possibly use these flaws to disclose portions of the server memory.

tags | advisory, remote, denial of service, protocol
systems | linux, redhat
advisories | CVE-2015-5252, CVE-2015-5296, CVE-2015-5299, CVE-2015-5330, CVE-2015-7540
SHA-256 | edf0fb514d3c6ce3421118cdbbd2a073602544574ed4b012c2f36821051776c9
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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