The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a database and tools to fix them.
History of vulnerabilities analyzed by Vigil@nce:

vulnerability alert CVE-2007-1388

Linux kernel: denial of service of setsockopt on Ipv6

Synthesis of the vulnerability

A local attacker can use setsockopt() on an IPv6 socket to stop kernel.
Impacted products: Linux, Mandriva Linux, openSUSE, RHEL.
Severity: 1/4.
Consequences: denial of service on server.
Provenance: user shell.
Creation date: 27/03/2007.
Identifiers: BID-23142, CVE-2007-1388, MDKSA-2007:078, RHSA-2007:0169-01, SUSE-SA:2007:029, VIGILANCE-VUL-6691.

Description of the vulnerability

The setsockopt() can be used on an IPv6 socket.

The IPV6_RTHDR option adds a routing header. This header is normally represented in an ip6_rthdr structure:
  setsockopt(sock, SOL_IPV6, IPV6_RTHDR, &structure, size);

However, the following case:
  setsockopt(sock, SOL_IPV6, IPV6_RTHDR, &empty, 0);
generates a NULL pointer dereference.

A local attacker can therefore use this vulnerability to create a denial of service.
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computer vulnerability bulletin CVE-2007-1718

PHP: header injection in mail

Synthesis of the vulnerability

An attacker can inject mail headers using To and Subject parameters of mail().
Impacted products: Debian, Fedora, Mandriva Linux, Mandriva NF, openSUSE, PHP, RHEL, Slackware, TurboLinux.
Severity: 1/4.
Consequences: data flow.
Provenance: user account.
Creation date: 27/03/2007.
Identifiers: 20070501-01-P, BID-23145, CERTA-2002-AVI-088, CVE-2007-1718, DSA-1282-1, DSA-1283-1, FEDORA-2007-415, FEDORA-2007-455, MDKSA-2007:087, MDKSA-2007:088, MDKSA-2007:089, MDKSA-2007:090, MOPB-34-2007, RHSA-2007:0153-01, RHSA-2007:0155-01, RHSA-2007:0162-01, SSA:2007-127-01, SUSE-SA:2007:032, TLSA-2007-29, VIGILANCE-VUL-6688.

Description of the vulnerability

The mail() function sends a message:
  mail(to, subject, body);

When a header is too long, it can be split on several lines starting with a space or a tabulation. For example:
  Header: long text...
     end of text.

The mail() function accepts headers split on several lines. However, in this case, the protection against header injections is bypassed.

An attacker who can define To or Subject fields can thus inject headers in the mail.
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computer vulnerability announce CVE-2007-1717

PHP: mail truncation

Synthesis of the vulnerability

An attacker can inject a null character in the body of a message sent with mail() function.
Impacted products: openSUSE, PHP, Slackware.
Severity: 1/4.
Consequences: data flow.
Provenance: user account.
Creation date: 27/03/2007.
Identifiers: BID-23146, CVE-2007-1717, MOPB-33-2007, SSA:2007-127-01, SUSE-SA:2007:032, VIGILANCE-VUL-6687.

Description of the vulnerability

The mail() function sends a message:
  mail(to, subject, body);

When body contains a null character, it is truncated at its location.

An attacker who can define a fragment of the sent message can therefore truncate it.
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computer vulnerability alert CVE-2007-1644 CVE-2007-1692 CVE-2007-5355

Windows: traffic redirection via WPAD

Synthesis of the vulnerability

An attacker can register the WPAD name in the DNS or WINS server in order to redirect web traffic of victims.
Impacted products: Windows 2000, Windows 2003, Windows 2008 R0.
Severity: 1/4.
Consequences: data reading, data flow.
Provenance: intranet client.
Number of vulnerabilities in this bulletin: 3.
Creation date: 27/03/2007.
Revision date: 04/12/2007.
Identifiers: 934864, 945713, 962238, BID-26686, CVE-2007-1644, CVE-2007-1692, CVE-2007-5355, MS09-008, VIGILANCE-VUL-6686.

Description of the vulnerability

The Web Proxy Auto-Discovery (WPAD) feature permits to automatically detect and configure the web proxy. In this case the WPAD host name is searched via DNS or WINS, then it is used as proxy.

However, if the WPAD name is not used nor reserved by administrator, an attacker can register this computer name.

This attacker will then capture web traffic of victims with automatic proxy configuration activated.
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computer vulnerability 6685

Microsoft MDAC, IE: memory corruption via ADODB.Recordset.NextRecordset

Synthesis of the vulnerability

An attacker can use the NextRecordset() method of ADODB.Recordset in order to execute code on victim's computer.
Impacted products: MDAC, Windows 2000, Windows 2003, Windows XP.
Severity: 3/4.
Consequences: user access/rights.
Provenance: document.
Creation date: 26/03/2007.
Identifiers: 927779, MS07-009, VIGILANCE-VUL-6685.

Description of the vulnerability

The ADODB.Recordset ActiveX, provided by Microsoft Data Access Components, can be instantiated in Internet Explorer.

The NextRecordset() method of this ActiveX does not correctly frees memory of its parameter. This error corrupts memory and can lead to code execution.

An attacker can therefore create a HTML page calling this ActiveX in order to execute code.
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vulnerability note CVE-2007-1727

OpenView NNM: code execution

Synthesis of the vulnerability

A remote attacker can execute code on server using a vulnerability of HP OpenView Network Node Manager.
Impacted products: HPE NMC, OpenView, OpenView NNM.
Severity: 3/4.
Consequences: user access/rights.
Provenance: intranet client.
Creation date: 26/03/2007.
Identifiers: BID-23163, c00854999, CVE-2007-1727, HPSBMA02198, SSRT061177, VIGILANCE-VUL-6684.

Description of the vulnerability

A remote attacker can execute code on server using a vulnerability of HP OpenView Network Node Manager.
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vulnerability announce CVE-2007-1711

PHP: double free in session_decode

Synthesis of the vulnerability

An attacker can generate a double memory free in session_decode() in order to execute code.
Impacted products: Debian, Mandriva NF, PHP, RHEL, TurboLinux.
Severity: 3/4.
Consequences: user access/rights.
Provenance: internet client.
Creation date: 26/03/2007.
Identifiers: 20070501-01-P, BID-23121, CERTA-2002-AVI-088, CVE-2007-1711, DSA-1282-1, DSA-1283-1, MDKSA-2007:087, MDKSA-2007:088, MOPB-31-2007, MOPB-32-2007, RHSA-2007:0154-01, RHSA-2007:0155-01, TLSA-2007-29, VIGILANCE-VUL-6682.

Description of the vulnerability

The session_decode() function decodes data stored in a session.

Patch for a vulnerability described in VIGILANCE-VUL-6563 (CVE-2007-0906) frees memory twice when an attack attempt is detected in session_decode() function. This error corrupts memory.

An attacker can therefore use malicious data in order to execute code with rights of PHP.
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vulnerability alert CVE-2006-4175

Sun Java System Directory Server: denial of service of ns-ldap

Synthesis of the vulnerability

An attacker can send a malicious LDAP query in order to stop service.
Impacted products: Oracle Directory Server.
Severity: 2/4.
Consequences: denial of service on service.
Provenance: intranet client.
Creation date: 26/03/2007.
Identifiers: 102853, 6462036, BID-23117, CVE-2006-4175, VIGILANCE-VUL-6681.

Description of the vulnerability

The LDAP protocol uses ASN.1 and the BER (Basic Encoding Rules) encoding.

When ns-ldap receives a malicious LDAP query, its BER decoding generates an error. A memory area is thus freed, but as it was not allocated, this stops ns-ldap.

This vulnerability leads to a denial of service. Apparently, code execution seems difficult to achieve.
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vulnerability CVE-2007-1592

Linux kernel: denial of service via IPV6_FLOWLABEL_MGR

Synthesis of the vulnerability

A local attacker can create an IPv6 socket with IPV6_FLOWLABEL_MGR option in order to stop system.
Impacted products: Debian, Linux, Mandriva Linux, NLD, OES, openSUSE, RHEL, SLES.
Severity: 1/4.
Consequences: denial of service on server.
Provenance: user shell.
Creation date: 23/03/2007.
Identifiers: 233478, BID-23104, BID-23142, CERTA-2002-AVI-088, CVE-2007-1592, DSA-1286-1, DSA-1304-1, DSA-1503-1, MDKSA-2007:078, MDVSA-2011:051, RHSA-2007:0347-01, RHSA-2007:0436-01, RHSA-2007:0672-01, RHSA-2007:0673-01, SUSE-SA:2007:029, SUSE-SA:2007:030, SUSE-SA:2007:035, SUSE-SA:2007:043, VIGILANCE-VUL-6680.

Description of the vulnerability

An IPv6 header contains 20 bits of Flow Label and 8 bits of Traffic Class, in order for example to define a quality of service.

The IPV6_FLOWLABEL_MGR option of setsockopt() permits to handle Flow Labels of an IPv6 socket. However, during an operation on the socket, these data are not correctly cloned. An attacker can therefore create an IPv6 socket, connect to it, then close it, in order to generate an error stopping the system.

This vulnerability therefore permits a local attacker to create a denial of service.
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computer vulnerability note CVE-2007-1658

Windows Mail: command execution

Synthesis of the vulnerability

When user clicks on a command which has the same name as a directory, it is executed without warning.
Impacted products: OE, Microsoft Windows Mail.
Severity: 1/4.
Consequences: user access/rights.
Provenance: document.
Creation date: 23/03/2007.
Identifiers: 929123, BID-23103, CVE-2007-1658, MS07-034, VIGILANCE-VUL-6679.

Description of the vulnerability

When user receives an email containing a link to a local program, and clicks on this link, a warning dialog is displayed in Windows Mail client.

However, when a directory with the same name exists, there is no warning dialog.

For example, Windows Vista creates following commands and directories:
 - Windows Remote Management :
    c:/windows/system32/winrm/
    c:/windows/system32/winrm.cmd
 - Migration Wizard :
    c:/windows/system32/migwiz/
    c:/windows/system32/migwiz.cmd

An attacker can therefore invite user to click on a link to automatically start these softwares. Currently, no way to give parameters to program has been found.
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