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 CVE-2006-3178

CHM lib: directory traversal

Synthesis of the vulnerability

An attacker can create a malicious CHM archive in order to force extract_chmLib to create files outside current directory.
Impacted products: Debian, Unix (platform) ~ not comprehensive.
Severity: 1/4.
Consequences: data creation/edition.
Provenance: document.
Creation date: 08/08/2006.
Identifiers: BID-18511, CVE-2006-3178, DSA-1144-1, VIGILANCE-VUL-6060.

Description of the vulnerability

The CHM lib library manipulates Microsoft ITSS/CHM formats. The extract_chmLib program is an example provided with chmlib.

However, this program does not check if CHM archive contains '..', which permits an attacker to escape current directory.

This vulnerability thus permits an attacker to create files with rights of user of extract_chmLib.
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computer vulnerability note CVE-2006-4018

ClamAV: buffer overflow of pefromupx

Synthesis of the vulnerability

An attacker can create a malicious UPX program in order to generate a denial of service or to run code on ClamAV.
Impacted products: ClamAV, Debian, Mandriva Linux, openSUSE.
Severity: 3/4.
Consequences: user access/rights, denial of service on service.
Provenance: document.
Creation date: 07/08/2006.
Identifiers: BID-19381, CERTA-2006-AVI-336, CVE-2006-4018, DSA-1153-1, MDKSA-2006:138, SUSE-SA:2006:046, VIGILANCE-VUL-6059.

Description of the vulnerability

Programs can be packed in order to shrink their size and make their analyze more complex. ClamAV supports UPX packer (Ultimate Packer for eXecutables).

A program compacted with UPX can lead to a buffer overflow in pefromupx() function of libclamav/upx.c.

An attacker can therefore send a compacted program in order to run code or to generate a denial of service.
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computer vulnerability bulletin CVE-2006-3122

ISC DHCP: denial of service via DHCPDISCOVER

Synthesis of the vulnerability

An attacker can send a malicious DHCPDISCOVER packet in order to stop the ISC DHCP daemon version 2.
Impacted products: Debian, ISC DHCP, OpenBSD.
Severity: 1/4.
Consequences: denial of service on service.
Provenance: LAN.
Creation date: 04/08/2006.
Identifiers: 380273, BID-19348, CVE-2006-3122, DSA-1143-1, VIGILANCE-VUL-6058.

Description of the vulnerability

The ISC DHCP daemon is available in versions 2 and 3. The version 2 is not maintained since year 2000, but a newly discovered vulnerability was published.

The DHCP protocol (RFC 2131 and 2132) uses several message types: DISCOVER, OFFER, REQUEST, DECLINE, etc. The DHCPOFFER type is used to answer a DHCPDISCOVER request.

The Client-identifier option indicates the unique identifier of the client. Its size is variable.

When the ISC DHCP server receives a DHCPDISCOVER message containing a Client-identifier option of exactly 32 bytes, an error occurs during the creation of the DHCPOFFER answer. This error stops server.

This vulnerability therefore permits a network attacker to generate a denial of service.
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computer vulnerability announce CVE-2006-4002

Drupal: Cross Site Scripting of user_login

Synthesis of the vulnerability

An attacker can display a message in user_login() in order to conduct a Cross Site Scripting attack.
Impacted products: Debian, Drupal Core.
Severity: 2/4.
Consequences: client access/rights.
Provenance: document.
Creation date: 03/08/2006.
Identifiers: BID-19325, CVE-2006-4002, DRUPAL-SA-2006-011, DSA-1147-1, VIGILANCE-VUL-6057.

Description of the vulnerability

The Drupal application permits to create a complete website from a customizable and administrable pattern. The user.module module provides user authentication.

The user_login() function of this module does not filter the welcome message before displaying it.

An attacker can therefore inject script which will be executed in the context of web client connecting to Drupal.
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computer vulnerability alert CVE-2006-3123

cfs: integer overflow

Synthesis of the vulnerability

By adding a file of over 2Gb on a CFS filesystem, an integer overflow occurs, which stops daemon.
Impacted products: Debian.
Severity: 1/4.
Consequences: denial of service on service.
Provenance: user shell.
Creation date: 03/08/2006.
Identifiers: 371076, BID-19320, CVE-2006-3123, DSA-1138-1, VIGILANCE-VUL-6056.

Description of the vulnerability

The CFS filesystem (Cryptographic File System) encrypts stored files.

However, when size of a file is over 2Go, an integer overflow occurs in dodecrypt() function.

A local attacker can thus stop the daemon in order to generate a denial of service.
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computer vulnerability CVE-2006-3459 CVE-2006-3460 CVE-2006-3461

LibTIFF: several vulnerabilities

Synthesis of the vulnerability

The LibTIFF library contains several vulnerabilities which could lead to code execution.
Impacted products: Debian, Fedora, Mandriva Linux, Mandriva NF, openSUSE, Solaris, Trusted Solaris, RHEL, Slackware, SLES.
Severity: 3/4.
Consequences: user access/rights, denial of service on client.
Provenance: document.
Number of vulnerabilities in this bulletin: 7.
Creation date: 02/08/2006.
Identifiers: 103160, 10326, 10332, 20060801-01-P, 20060901-01-P, 201331, 6451119, BID-19282, BID-19283, BID-19284, BID-19285, BID-19286, BID-19287, BID-19288, BID-19290, CERTA-2006-AVI-329, CVE-2006-3459, CVE-2006-3460, CVE-2006-3461, CVE-2006-3462, CVE-2006-3463, CVE-2006-3464, CVE-2006-3465, DSA-1137-1, FEDORA-2006-877, FEDORA-2006-878, FEDORA-2006-952, MDKSA-2006:136, MDKSA-2006:137, RHSA-2006:060, RHSA-2006:0603-01, RHSA-2006:0648-01, SSA:2006-230-01, SUSE-SA:2006:044, VIGILANCE-VUL-6055.

Description of the vulnerability

The LibTIFF library provides support for TIFF images (Tagged Image File Format). It contains several vulnerabilities.

Some malicious tags can lead to errors. [severity:3/4; BID-19287, CVE-2006-3465]
Several integer overflows can lead to errors. [severity:3/4; BID-19286, CVE-2006-3464]
An infinite loop can be generated in EstimateStripByteCounts(). [severity:3/4; BID-19284, CVE-2006-3463]
A heap overflow can occur in NeXT RLE. [severity:3/4; BID-19282, CVE-2006-3462]
A heap overflow can occur in PixarLog. [severity:3/4; BID-19290, CVE-2006-3461]
Several buffer overflow can occur in TIFFFetchShortPair() function. [severity:3/4; BID-19283, CERTA-2006-AVI-329, CVE-2006-3459]
A heap overflow can occur in TIFFScanLineSize() function. [severity:3/4; BID-19288, CVE-2006-3460]

These vulnerabilities therefore permit an attacker to conduct a denial of service or to run code with privileges of applications linked to LibTIFF.
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vulnerability note CVE-2006-0664 CVE-2006-0665 CVE-2006-0841

Mantis: several Cross Site Scripting

Synthesis of the vulnerability

Several Cross Site Scripting can be exploited in Mantis.
Impacted products: Debian, Unix (platform) ~ not comprehensive.
Severity: 2/4.
Consequences: client access/rights.
Provenance: document.
Number of vulnerabilities in this bulletin: 4.
Creation date: 02/08/2006.
Identifiers: BID-16561, BID-17326, CVE-2006-0664, CVE-2006-0665, CVE-2006-0841, CVE-2006-1577, DSA-1133-1, VIGILANCE-VUL-6054.

Description of the vulnerability

Mantis environment manages application bugs, using a MySQL database and PHP generated webpages.

Several vulnerabilities are corrected in version 1.0.2 of Mantis:
 - config_defaults_inc.php [severity:2/4; BID-16561, CVE-2006-0664]
 - query_store.php, manage_proj_create.php [severity:2/4; CVE-2006-0665]
 - view_all_set.php, manage_user_page.php, view_filters_page.php, proj_doc_delete.php [severity:2/4; CVE-2006-0841]
 - view_all_set.php [severity:2/4; BID-17326, CVE-2006-1577]
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vulnerability bulletin CVE-2006-3961

VirusScan: code execution via Subscription Manager

Synthesis of the vulnerability

A remote attacker can execute code on system via McAfee products using the Subscription Manager ActiveX.
Impacted products: VirusScan.
Severity: 3/4.
Consequences: privileged access/rights.
Provenance: document.
Creation date: 01/08/2006.
Revisions dates: 02/08/2006, 08/08/2006, 10/05/2007.
Identifiers: AD2006807, BID-19265, BID-23909, CVE-2006-3961, EEYEB-20060719, VIGILANCE-VUL-6053, VU#481212.

Description of the vulnerability

The Subscription Manager ActiveX checks if user license of McAfee products is valid:
 - McAfee AntiSpyware
 - McAfee Internet Security Suite 2006
 - McAfee Personal Firewall Plus
 - McAfee Privacy Service
 - McAfee SpamKiller
 - McAfee VirusScan
 - McAfee Wireless Home Network Security
This ActiveX, McSubMgr.dll, is "safe for scripting".

However, McSubMgr.dll contains several buffer overflows. An attacker can therefore create a malicious web document calling this ActiveX, and invite user to read it, in order to generate an overflow.

This vulnerability therefore permits an attacker to execute code on user's computer when a malicious web document is displayed.
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vulnerability announce CVE-2006-3853 CVE-2006-3854 CVE-2006-3855

Informix DS: several vulnerabilities

Synthesis of the vulnerability

Several vulnerabilities of Informix Dynamic Server permit a local attacker to generate a denial of service or to execute code.
Impacted products: Informix Server.
Severity: 2/4.
Consequences: privileged access/rights, data reading, denial of service on service.
Provenance: user account.
Number of vulnerabilities in this bulletin: 10.
Creation date: 01/08/2006.
Revision date: 16/08/2006.
Identifiers: 1242921, BID-19264, CVE-2006-3853, CVE-2006-3854, CVE-2006-3855, CVE-2006-3856, CVE-2006-3857, CVE-2006-3858, CVE-2006-3859, CVE-2006-3860, CVE-2006-3861, CVE-2006-3862, NISR02082006, NISR02082006A, NISR02082006B, NISR02082006C, NISR02082006D, VIGILANCE-VUL-6052.

Description of the vulnerability

The Informix Dynamic Server product has 14 vulnerabilities. IBM's announce contains a detailed table, summarized below.

A buffer overflow can occur in DBINFO() function.
A buffer overflow can occur in LOTOFILE() function.
A buffer overflow can occur in FILETOCLOB() function.
An attacker can execute commands using dbimp and dbexp procedures.
A buffer overflow can occur under Windows when a long username is entered.
An attacker can execute commands using SET DEBUG FILE.
A buffer overflow can occur in SET DEBUG FILE.
A buffer overflow can occur in getname() function.
An attacker can elevate his privileges via "C code UDR".
Two similar denial of service can be generated.
User passwords are stored in plain text in shared memory.
Any user has permissions to create a database.
A buffer overflow can occur in ifx_file_to_file() function.
A buffer overflow can occur via SQLIDEBUG environment variable.

A local attacker can therefore generate a denial of service, execute code or obtain information.
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vulnerability alert 6051

Asterisk: denial of service

Synthesis of the vulnerability

An attacker can send numerous spoofed request in order to overload Asterisk.
Impacted products: Asterisk Open Source.
Severity: 1/4.
Consequences: denial of service on service.
Provenance: intranet client.
Creation date: 01/08/2006.
Identifiers: 228, VIGILANCE-VUL-6051.

Description of the vulnerability

The Asterisk PBX product implements the IAX2 protocol (Inter-Asterisk Exchange version 2) to transmit streaming over IP. This protocol uses the 4569/udp port.

An attacker, knowing an user name, can send numerous connection requests using this name. As UDP is used, each request can come from a different spoofed address. These requests can use all available resources.

This vulnerability therefore permits a remote attacker to generate a denial of service.
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