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 note CVE-2013-2964

IBM Tivoli Storage Manager: buffer overflow of dsmtca

Synthesis of the vulnerability

An attacker can generate a buffer overflow in dsmtca of IBM Tivoli Storage Manager, in order to trigger a denial of service, and possibly to elevate his privileges.
Impacted products: Tivoli Storage Manager.
Severity: 2/4.
Consequences: administrator access/rights.
Provenance: user shell.
Creation date: 02/10/2013.
Identifiers: 1651120, CVE-2013-2964, VIGILANCE-VUL-13514.

Description of the vulnerability

The IBM Tivoli Storage Manager suite installs the dsmtca (Trusted Communications Agent) program (/usr/bin/dsmtca, $DSMI_DIR/dsmtca).

However, if the size of dsmtca data is greater than the size of the storage array, an overflow occurs.

An attacker can therefore generate a buffer overflow in dsmtca of IBM Tivoli Storage Manager, in order to trigger a denial of service, and possibly to elevate his privileges.
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vulnerability bulletin 13513

WordPress MORE: Cross Site Scripting

Synthesis of the vulnerability

An attacker can trigger a Cross Site Scripting of WordPress MORE+, in order to execute JavaScript code in the context of the web site.
Impacted products: WordPress Plugins ~ not comprehensive.
Severity: 2/4.
Consequences: client access/rights.
Provenance: document.
Creation date: 02/10/2013.
Identifiers: BID-62881, VIGILANCE-VUL-13513.

Description of the vulnerability

The MORE+ theme can be installed on WordPress.

However, it does not filter received data before inserting them in generated HTML documents.

An attacker can therefore trigger a Cross Site Scripting of WordPress MORE+, in order to execute JavaScript code in the context of the web site.
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vulnerability announce CVE-2013-4345

Linux kernel: information disclosure via ansi_cprng

Synthesis of the vulnerability

An attacker can use an application using the ANSI CPRNG generator of the Linux kernel, in order to obtain sensitive information.
Impacted products: Debian, Fedora, Linux, openSUSE, RHEL, Ubuntu.
Severity: 1/4.
Consequences: data reading.
Provenance: user shell.
Creation date: 02/10/2013.
Identifiers: BID-62740, CVE-2013-4345, DSA-2906-1, FEDORA-2013-17865, FEDORA-2013-17942, openSUSE-SU-2014:0766-1, RHSA-2013:1449-01, RHSA-2013:1490-01, RHSA-2013:1645-02, USN-2158-1, VIGILANCE-VUL-13512.

Description of the vulnerability

The crypto/ansi_cprng.c file of the Linux kernel implements a pseudo-random generator based on the X9.31 recommendation of the ANSI.

The get_prng_bytes() function obtains a suite of random bytes. However, if the number of requested bytes is smaller than the block size (DEFAULT_BLK_SZ = 16), then the last byte is reused for the next query.

An attacker can therefore use an application using the ANSI CPRNG generator of the Linux kernel, in order to obtain sensitive information.
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vulnerability alert 13511

VLC: memory corruption via ASF

Synthesis of the vulnerability

An attacker can invite the victim to open a malicious ASL document, to generate a memory corruption in VLC, in order to trigger a denial of service, and possibly to execute code.
Impacted products: VLC.
Severity: 2/4.
Consequences: user access/rights, denial of service on client.
Provenance: document.
Creation date: 01/10/2013.
Identifiers: VIGILANCE-VUL-13511.

Description of the vulnerability

The VideoLAN VLC program plays multimedia documents.

The ASF (Advanced Systems Format) format contains information on the multimedia document. However, if a field is malformed, a memory corruption occurs in the asf.c file of VLC.

An attacker can therefore invite the victim to open a malicious ASL document, to generate a memory corruption in VLC, in order to trigger a denial of service, and possibly to execute code.
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vulnerability CVE-2013-5517

Cisco Unified Communications Domain Manager: SQL injection

Synthesis of the vulnerability

An attacker can use a SQL injection of Cisco Unified Communications Domain Manager, in order to read or alter data.
Impacted products: Cisco CUCM.
Severity: 2/4.
Consequences: data reading, data creation/edition, data deletion.
Provenance: internet client.
Creation date: 01/10/2013.
Identifiers: BID-62746, CSCuh96567, CVE-2013-5517, VIGILANCE-VUL-13510.

Description of the vulnerability

The Cisco Unified Communications Domain Manager product offers a web service.

However, url parameters are directly inserted in a SQL query.

An attacker can therefore use a SQL injection of Cisco Unified Communications Domain Manager, in order to read or alter data.
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computer vulnerability note CVE-2013-4391 CVE-2013-4392 CVE-2013-4393

systemd: multiple vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of systemd.
Impacted products: Debian, Unix (platform) ~ not comprehensive.
Severity: 2/4.
Consequences: privileged access/rights, user access/rights, denial of service on service.
Provenance: user shell.
Number of vulnerabilities in this bulletin: 4.
Creation date: 01/10/2013.
Identifiers: 859051, 859060, 859104, 862324, CVE-2013-4391, CVE-2013-4392, CVE-2013-4393, CVE-2013-4394, DSA-2777-1, VIGILANCE-VUL-13509.

Description of the vulnerability

Several vulnerabilities were announced in systemd, the service starting daemon.

An attacker can generate an integer overflow, in order to trigger a denial of service, and possibly to execute code. [severity:2/4; 859051, CVE-2013-4391]

An attacker can access to files while their permissions are updated, in order to obtain sensitive information. [severity:2/4; 859060, CVE-2013-4392]

An attacker can block the journald service, in order to trigger a denial of service. [severity:1/4; 859104, CVE-2013-4393]

An attacker can use a special XKB Layouts Description, in order to escalate his privileges. [severity:2/4; 862324, CVE-2013-4394]
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computer vulnerability bulletin CVE-2013-4388

VLC: buffer overflow of LOASParse

Synthesis of the vulnerability

An attacker can generate a buffer overflow in the LOASParse() function of VLC, in order to trigger a denial of service, and possibly to execute code.
Impacted products: Debian, VLC.
Severity: 2/4.
Consequences: client access/rights, denial of service on client.
Provenance: document.
Creation date: 01/10/2013.
Identifiers: BID-62724, CVE-2013-4388, DSA-2973-1, VIGILANCE-VUL-13508.

Description of the vulnerability

The VideoLAN VLC program plays multimedia documents.

The LOASParse() function of the modules/packetizer/mpeg4audio.c file analyzes MPEG4 audio documents. However, if the size of data is greater than the size of the storage array, an overflow occurs.

An attacker can therefore generate a buffer overflow in the LOASParse() function of VLC, in order to trigger a denial of service, and possibly to execute code.
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computer vulnerability announce CVE-2013-4361

Xen: information disclosure via FBLD

Synthesis of the vulnerability

An attacker located in a guest system can use the FBLD instruction, to read data from other Xen guests, in order to obtain sensitive information.
Impacted products: XenServer, Debian, Fedora, openSUSE, SLES, Unix (platform) ~ not comprehensive.
Severity: 1/4.
Consequences: data reading.
Provenance: user shell.
Creation date: 30/09/2013.
Identifiers: BID-62710, CTX139295, CVE-2013-4361, DSA-3006-1, FEDORA-2013-18373, FEDORA-2013-18378, openSUSE-SU-2013:1636-1, openSUSE-SU-2013:1953-1, SUSE-SU-2014:0446-1, VIGILANCE-VUL-13507, XSA-66.

Description of the vulnerability

The FBLD (Load Binary Coded Decimal) assembler instruction loads a decimal number and then converts it to a real number.

The x86_emulate() function of the xen/arch/x86/x86_emulate/x86_emulate.c file implements the FBLD instruction. However, the source address is not initialized. The guest system thus obtains a value originating from the hypervisor stack.

An attacker located in a guest system can therefore use the FBLD instruction, to read data from other Xen guests, in order to obtain sensitive information.
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computer vulnerability alert CVE-2013-4356

Xen: privilege escalation via 64-bit PV Migration

Synthesis of the vulnerability

An attacker located in a 64 bit PV system which is migrated can access to Xen memory, in order to escalate his privileges.
Impacted products: Unix (platform) ~ not comprehensive.
Severity: 2/4.
Consequences: administrator access/rights.
Provenance: user shell.
Creation date: 30/09/2013.
Identifiers: BID-62709, CERTA-2013-AVI-551, CVE-2013-4356, VIGILANCE-VUL-13506, XSA-64.

Description of the vulnerability

The "Live Migration" feature of Xen is used to move a system from one computer to another, without stopping it.

However, during this operation, a 64 bit PV guest can use hypercalls to control the L4 cache memory of hosts with more than 5 TBytes of memory.

An attacker located in a 64 bit PV system which is migrated can therefore access to Xen memory, in order to escalate his privileges.
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computer vulnerability CVE-2013-4355

Xen: information disclosure via I/O Emulation

Synthesis of the vulnerability

An attacker located in a HVM guest can use input/output operations, to read Xen memory, in order to obtain sensitive information.
Impacted products: XenServer, Debian, Fedora, openSUSE, RHEL, SLES, Unix (platform) ~ not comprehensive.
Severity: 1/4.
Consequences: data reading.
Provenance: user shell.
Creation date: 30/09/2013.
Identifiers: BID-62708, CERTA-2013-AVI-551, CTX139295, CVE-2013-4355, DSA-3006-1, FEDORA-2013-18373, FEDORA-2013-18378, openSUSE-SU-2013:1636-1, openSUSE-SU-2013:1953-1, RHSA-2013:1790-01, SUSE-SU-2014:0411-1, SUSE-SU-2014:0446-1, SUSE-SU-2014:0470-1, VIGILANCE-VUL-13505, XSA-63.

Description of the vulnerability

A HVM (Hardware Virtual Machine) guest system uses resources of the physical system.

When an error occurs during the copy of memory data, several error codes are used:
 - HVMCOPY_bad_gva_to_gfn
 - HVMCOPY_gfn_paged_out
 - HVMCOPY_gfn_shared
 - etc.

However, several functions of the xen/arch/x86/hvm/ directory do not process all error cases. Some error cases are thus ignored, and Xen continues its execution path and returns data to the user.

An attacker located in a HVM guest can therefore use input/output operations, to read Xen memory, in order to obtain sensitive information.
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