CVE-2017-3790 : Detail

CVE-2017-3790

8.6
/
Tinggi
0.3%V4
2017-02-01
19h00 +00:00
Overflow
A03-Injection
Network
2024-08-05
14h39 +00:00
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Deskripsi CVE

A vulnerability in the received packet parser of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) software could allow an unauthenticated, remote attacker to cause a reload of the affected system, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient size validation of user-supplied data. An attacker could exploit this vulnerability by sending crafted H.224 data in Real-Time Transport Protocol (RTP) packets in an H.323 call. An exploit could allow the attacker to overflow a buffer in a cache that belongs to the received packet parser, which will result in a crash of the application, resulting in a DoS condition. All versions of Cisco Expressway Series Software and Cisco TelePresence VCS Software prior to version X8.8.2 are vulnerable. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Cisco Bug IDs: CSCus99263.

Informasi CVE

Kelemahan Terkait

CWE-ID Nama Kelemahan Sumber
CWE-399 Category : Resource Management Errors
Weaknesses in this category are related to improper management of system resources.
CWE-20 Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.

Metrik

Metrik Skor Tingkat keparahan CVSS Vektor Sumber
V3.0 8.6 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Network

A vulnerability exploitable with network access means the vulnerable component is bound to the network stack and the attacker's path is through OSI layer 3 (the network layer). Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable one or more network hops away (e.g. across layer 3 boundaries from routers).

Attack Complexity

This metric describes the conditions beyond the attacker's control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

None

The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.

User Interaction

This metric captures the requirement for a user, other than the attacker, to participate in the successful compromise of the vulnerable component.

None

The vulnerable system can be exploited without interaction from any user.

Base: Scope Metrics

An important property captured by CVSS v3.0 is the ability for a vulnerability in one software component to impact resources beyond its means, or privileges.

Scope

Formally, Scope refers to the collection of privileges defined by a computing authority (e.g. an application, an operating system, or a sandbox environment) when granting access to computing resources (e.g. files, CPU, memory, etc). These privileges are assigned based on some method of identification and authorization. In some cases, the authorization may be simple or loosely controlled based upon predefined rules or standards. For example, in the case of Ethernet traffic sent to a network switch, the switch accepts traffic that arrives on its ports and is an authority that controls the traffic flow to other switch ports.

Changed

An exploited vulnerability can affect resources beyond the authorization privileges intended by the vulnerable component. In this case the vulnerable component and the impacted component are different.

Base: Impact Metrics

The Impact metrics refer to the properties of the impacted component.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

None

There is no loss of confidentiality within the impacted component.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

None

There is no loss of integrity within the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

High

There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence that one has in the description of a vulnerability.

Environmental Metrics

nvd@nist.gov
V2 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C nvd@nist.gov

EPSS

EPSS adalah model penilaian yang memprediksi kemungkinan suatu kerentanan dieksploitasi.

Skor EPSS

Model EPSS menghasilkan skor probabilitas antara 0 dan 1 (0 hingga 100%). Semakin tinggi skor, semakin besar probabilitas bahwa suatu kerentanan akan dieksploitasi.

Persentil EPSS

Persentil digunakan untuk meranking CVE berdasarkan skor EPSS mereka. Misalnya, CVE di persentil ke-95 berdasarkan skor EPSS-nya lebih mungkin dieksploitasi daripada 95% CVE lainnya. Dengan demikian, persentil digunakan untuk membandingkan skor EPSS suatu CVE dengan CVE lainnya.

Produk yang Disebutkan

Konfigurasi 0

Cisco>>Expressway >> Version x8.1.0

Cisco>>Expressway >> Version x8.1.1

Cisco>>Expressway >> Version x8.1.2

Cisco>>Expressway >> Version x8.1_base

Cisco>>Expressway >> Version x8.2.1

Cisco>>Expressway >> Version x8.2.2

Cisco>>Expressway >> Version x8.2_base

Cisco>>Expressway >> Version x8.5

Cisco>>Expressway >> Version x8.5.0

Cisco>>Expressway >> Version x8.5.1

Cisco>>Expressway >> Version x8.5.2

Cisco>>Expressway >> Version x8.5.3

Cisco>>Expressway >> Version x8.5_base

Cisco>>Expressway >> Version x8.6.0

Cisco>>Expressway >> Version x8.6.1

Cisco>>Expressway >> Version x8.7.0

Cisco>>Expressway >> Version x8.7.1

Cisco>>Expressway >> Version x8.7.2

Cisco>>Expressway >> Version x8.7.3

Cisco>>Expressway >> Version x8.8.0

Cisco>>Expressway >> Version x8.8.1

Cisco>>Telepresence_video_communication_server >> Version x5.2_base

Cisco>>Telepresence_video_communication_server >> Version x6.0_base

Cisco>>Telepresence_video_communication_server >> Version x6.1_base

Cisco>>Telepresence_video_communication_server >> Version x7.0.0

Cisco>>Telepresence_video_communication_server >> Version x7.0.1

Cisco>>Telepresence_video_communication_server >> Version x7.0.2

Cisco>>Telepresence_video_communication_server >> Version x7.0.3

Cisco>>Telepresence_video_communication_server >> Version x7.1_base

Cisco>>Telepresence_video_communication_server >> Version x7.2.0

Cisco>>Telepresence_video_communication_server >> Version x7.2.1

Cisco>>Telepresence_video_communication_server >> Version x7.2.2

Referensi

http://www.securityfocus.com/bid/95786
Tags : vdb-entry, x_refsource_BID
http://www.securitytracker.com/id/1037697
Tags : vdb-entry, x_refsource_SECTRACK