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:

computer vulnerability alert CVE-2007-3200

NetWare: password disclosure of NMAS

Synthesis of the vulnerability

A local attacker can read the password used by NMASINST.
Impacted products: Netware.
Severity: 2/4.
Consequences: administrator access/rights, data reading.
Provenance: user shell.
Creation date: 11/06/2007.
Identifiers: 3260550, BID-24405, CVE-2007-3200, VIGILANCE-VUL-6896.

Description of the vulnerability

The NMAS (Novell Modular Authentication Service) feature adds authentication methods to Novell eDirectory.

When NMASINST command is run, password entered by administrator is logged in the SYS:/ETC/NMAS/NMASINST.LOG file.

An attacker can therefore read this file in order to obtain administrator's password.
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computer vulnerability CVE-2007-1869 CVE-2007-1870

lighttpd: denials of service

Synthesis of the vulnerability

An attacker can generate two denials of service in lighttpd.
Impacted products: Debian, lighttpd, openSUSE, SLES, Unix (platform) ~ not comprehensive.
Severity: 2/4.
Consequences: denial of service on service.
Provenance: internet client.
Number of vulnerabilities in this bulletin: 2.
Creation date: 11/06/2007.
Identifiers: BID-23515, CVE-2007-1869, CVE-2007-1870, DSA-1303-1, lighttpd_sa2007_01, lighttpd_sa2007_02, SUSE-SR:2007:007, VIGILANCE-VUL-6895.

Description of the vulnerability

The lighttpd program is a web server. An attacker can generate two denials of service in lighttpd.

If client disconnects when lighttpd analyzes line feed and carriage returns ("\r\n\r\n"), an infinite loop occurs. An attacker can therefore connect to the web site, send several line feeds and carriage returns then disconnect in order to generate a denial of service. [severity:2/4; CVE-2007-1869, lighttpd_sa2007_01]

The lighttpd server keeps in its cache the text string associated to last modification time of files (mtime). However, when mtime is zero, this string is NULL, and lighttpd dereferences a NULL pointer. To exploit this vulnerability, attacker has to be able to change mtime of a file before accessing it. [severity:2/4; CVE-2007-1870, lighttpd_sa2007_02]
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vulnerability note CVE-2007-2876

Linux kernel: denial of service of SCTP

Synthesis of the vulnerability

An attacker can stop kernel by sending a SCTP packet.
Impacted products: Debian, Fedora, Linux, Mandriva Linux, NLD, OES, openSUSE, RHEL, SLES.
Severity: 2/4.
Consequences: denial of service on server.
Provenance: internet client.
Creation date: 08/06/2007.
Identifiers: BID-24376, CVE-2007-2876, DSA-1356-1, FEDORA-2007-0409, FEDORA-2007-1130, FEDORA-2007-599, FEDORA-2007-600, MDKSA-2007:171, MDKSA-2007:196, RHSA-2007:0488-01, RHSA-2007:0705-01, SUSE-SA:2007:043, SUSE-SA:2007:051, SUSE-SA:2007:053, VIGILANCE-VUL-6894.

Description of the vulnerability

The SCTP protocol (Stream Control Transmission Protocol) creates associations to send several streams.

An attacker can create a new connection and send a SCTP packet with an unknown chunk type in order to dereference a NULL pointer.

An attacker can therefore generate a denial of service on computers where SCTP is activated.
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vulnerability bulletin CVE-2007-2875

Linux kernel: information disclosure via cpuset

Synthesis of the vulnerability

A local attacker can read fragments of memory using cpuset.
Impacted products: Debian, Fedora, Linux, Mandriva Linux, NLD, OES, openSUSE, RHEL, SLES.
Severity: 1/4.
Consequences: data reading.
Provenance: user shell.
Creation date: 08/06/2007.
Revision date: 09/06/2007.
Identifiers: BID-24376, BID-24389, CERTA-2002-AVI-162, CVE-2007-2875, DSA-1363-1, FEDORA-2007-0409, FEDORA-2007-599, FEDORA-2007-600, MDKSA-2007:171, MDKSA-2007:196, RHSA-2007:0705-01, SUSE-SA:2007:053, VIGILANCE-VUL-6893.

Description of the vulnerability

The kernel/cpuset.c file handles system tasks.

The cpuset_tasks_read() function returns information from /dev/cpuset/tasks (not created by default) to user. However, this function does not correctly checks if size to read and to return to user is negative or overflows.

A local attacker can therefore read a kernel memory area.
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vulnerability announce CVE-2007-2453

Linux kernel: entropy weaknesses

Synthesis of the vulnerability

Two weaknesses affect the entropy handling in random generator.
Impacted products: Debian, Fedora, Linux, Mandriva Linux, Mandriva NF, NLD, OES, openSUSE, RHEL, SLES.
Severity: 1/4.
Consequences: data reading.
Provenance: user account.
Number of vulnerabilities in this bulletin: 2.
Creation date: 08/06/2007.
Identifiers: BID-24376, BID-24390, CERTA-2007-AVI-256, CVE-2007-2453, DSA-1356-1, FEDORA-2007-0409, FEDORA-2007-599, FEDORA-2007-600, MDKSA-2007:171, MDKSA-2007:196, MDKSA-2007:216, RHSA-2007:0376-01, SUSE-SA:2007:043, SUSE-SA:2007:051, VIGILANCE-VUL-6892.

Description of the vulnerability

Two weaknesses affect the entropy handling in random generator.

The extract_buf() function of drivers/char/random.c file uses the SHA algorithm to hash random bytes. However, the sha_transform() function is always called on the same data, so it is unefficient. [severity:1/4]

When computer does not have entropy sources, random data are not correctly handled. [severity:1/4]
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vulnerability alert CVE-2007-3149

sudo: privilege elevation via Kerberos

Synthesis of the vulnerability

In some cases, a local attacker allowed to run sudo can elevate his privileges.
Impacted products: Unix (platform) ~ not comprehensive.
Severity: 1/4.
Consequences: administrator access/rights.
Provenance: user shell.
Creation date: 08/06/2007.
Revision date: 12/06/2007.
Identifiers: BID-24368, CVE-2007-3149, VIGILANCE-VUL-6891.

Description of the vulnerability

The sudo program permits users to execute privileged commands. The /etc/sudoers file indicates allowed users, and if a password is requested.

When sudo is compiled with Kerberos, and if user enters his password, sudo:
 - calls krb5_kt_read_service_key() to obtain the keytab key
 - uses and checks the ticket

However, if the /etc/krb5.keytab file does not exist, an error occurs in krb5_kt_read_service_key(). This error bypasses the posterior check of ticket.

The MIT Kerberos library eases this attack because attacker can change the name of keytab file, via KRB5_KTNAME, in order to generate the error.

An attacker with an access to an account allowed to run sudo can therefore execute its privileged commands without knowing its password.
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vulnerability CVE-2007-2948

MPlayer: buffer overflow via cddb

Synthesis of the vulnerability

An attacker can generate several overflows in the stream_cddb.c file of MPlayer.
Impacted products: Debian, Mandriva Linux, openSUSE, SLES, Unix (platform) ~ not comprehensive.
Severity: 3/4.
Consequences: user access/rights.
Provenance: document.
Creation date: 07/06/2007.
Identifiers: BID-24339, CERTA-2002-AVI-130, CVE-2007-2948, DSA-1313-1, MDKSA-2007:143, SUSE-SR:2007:014, VIGILANCE-VUL-6890.

Description of the vulnerability

The MPlayer program plays multimedia documents.

The "cddb://" uris are used to download information about a cdrom, such as artist's name.

The stream/stream_cddb.c file of MPlayer does not check "category" and "album_title" fields of cddb, in several locations. These errors lead to overflows and to code execution.

An attacker can therefore create a CDDB database in order to execute code on computer of victims reading this database from MPlayer.
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computer vulnerability bulletin CVE-2007-3094

Solaris: system access via SMC authentication

Synthesis of the vulnerability

An attacker can access system as root via a vulnerability of the authentication feature of Solaris Management Console.
Impacted products: Solaris, Trusted Solaris.
Severity: 3/4.
Consequences: administrator access/rights.
Provenance: intranet client.
Creation date: 06/06/2007.
Identifiers: 102902, 6365758, BID-24326, CVE-2007-3094, VIGILANCE-VUL-6888.

Description of the vulnerability

The WBEM standard (Web Based Enterprise Management) unifies system administration. The SMC (Solaris Management Console) software implements WBEM.

The authentication feature of WBEM server of SMC has a vulnerability. It permits a local or remote attacker to obtain root privileges.
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computer vulnerability announce CVE-2007-3093

Solaris: system access via SMC logging

Synthesis of the vulnerability

An attacker can access system as root via a vulnerability of the logging feature of Solaris Management Console.
Impacted products: Solaris, Trusted Solaris.
Severity: 3/4.
Consequences: administrator access/rights.
Provenance: intranet client.
Creation date: 06/06/2007.
Identifiers: 102903, 6365746, BID-24327, CVE-2007-3093, VIGILANCE-VUL-6887.

Description of the vulnerability

The WBEM standard (Web Based Enterprise Management) unifies system administration. The SMC (Solaris Management Console) software implements WBEM.

The logging feature of WBEM server of SMC has a vulnerability. It permits a local or remote attacker to obtain root privileges.
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computer vulnerability alert CVE-2007-3021 CVE-2007-3022 CVE-2007-3095

Symantec AV, Reporting Server: two vulnerabilities

Synthesis of the vulnerability

Two vulnerabilities can be exploited on Symantec Reporting Server.
Impacted products: Symantec AV.
Severity: 2/4.
Consequences: privileged access/rights, data reading.
Provenance: document.
Number of vulnerabilities in this bulletin: 2.
Creation date: 06/06/2007.
Identifiers: BID-24312, BID-24313, BID-24325, CERTA-2007-AVI-250, CVE-2007-3021, CVE-2007-3022, CVE-2007-3095, SYM07-011, SYM07-012, VIGILANCE-VUL-6886.

Description of the vulnerability

Two vulnerabilities can be exploited on Symantec Reporting Server, which can be installed in Symantec System Center and generates reports on products.

After a login failure on Symantec Reporting Server, the hashed password of administrator is displayed. [severity:2/4; BID-24312, CVE-2007-3022, SYM07-011]

An attacker can manipulate a file create by Symantec Reporting Server, then execute it with rights of server. [severity:2/4; BID-24313, BID-24325, CERTA-2007-AVI-250, CVE-2007-3021, SYM07-012]
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