CVE の説明

A vulnerability in the web user interface of Cisco IOS XE 3.1 through 3.17 could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to insufficient resource handling by the affected software when the web user interface is under a high load. An attacker could exploit this vulnerability by sending a high number of requests to the web user interface of the affected software. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. To exploit this vulnerability, the attacker must have access to the management interface of the affected software, which is typically connected to a restricted management network. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software, if the web user interface of the software is enabled. By default, the web user interface is not enabled. Cisco Bug IDs: CSCup70353.

CVE の情報

関連する弱点

CWE-ID	弱点名	出典
CWE-399	Category : Resource Management Errors Weaknesses in this category are related to improper management of system resources.
CWE-400	Uncontrolled Resource Consumption The product does not properly control the allocation and maintenance of a limited resource.

メトリクス

メトリクス	スコア	深刻度	CVSS ベクター	出典
V3.0	7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 詳細情報 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. Unchanged An exploited vulnerability can only affect resources managed by the same authority. In this case the vulnerable component and the impacted component are the same. 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は脆弱性が悪用される可能性を予測するスコアリングモデルです。

EPSSスコア

EPSSモデルは0から1（0〜100%）の確率スコアを算出します。スコアが高いほど、脆弱性が悪用される可能性が高いことを示します。

EPSSパーセンタイル

パーセンタイルはCVEをEPSSスコアで順位付けするために使用されます。例えば、EPSSスコアで95パーセンタイルにあるCVEは、他の95%のCVEよりも悪用される可能性が高いことを意味します。パーセンタイルはCVEのEPSSスコアを他のCVEと比較するために使用されます。

EPSS First.org

参考資料

http://www.securitytracker.com/id/1038101
Tags : vdb-entry, x_refsource_SECTRACK

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-webui
Tags : x_refsource_CONFIRM

http://www.securityfocus.com/bid/97007
Tags : vdb-entry, x_refsource_BID

日付	EPSS V0	EPSS V1	EPSS V2 (> 2022-02-04)	EPSS V3 (> 2025-03-07)	EPSS V4 (> 2025-03-17)
2021-04-18	1.38%	–	–	–	–
2021-09-05	–	1.38%	–	–	–
2021-10-10	–	1.38%	–	–	–
2021-10-17	–	1.38%	–	–	–
2021-11-14	–	1.38%	–	–	–
2021-11-21	–	1.38%	–	–	–
2021-12-12	–	1.38%	–	–	–
2022-01-09	–	1.38%	–	–	–
2022-01-16	–	1.38%	–	–	–
2022-02-06	–	–	1.14%	–	–
2022-02-13	–	–	1.14%	–	–
2022-04-03	–	–	1.14%	–	–
2022-04-24	–	–	1.14%	–	–
2022-07-17	–	–	1.14%	–	–
2022-11-13	–	–	1.14%	–	–
2022-11-20	–	–	1.14%	–	–
2022-12-04	–	–	1.14%	–	–
2023-03-12	–	–	–	0.36%	–
2023-08-27	–	–	–	0.36%	–
2024-02-11	–	–	–	0.36%	–
2024-03-31	–	–	–	0.36%	–
2024-06-02	–	–	–	0.36%	–
2024-09-01	–	–	–	0.36%	–
2024-09-08	–	–	–	0.36%	–
2024-09-22	–	–	–	0.36%	–
2024-10-27	–	–	–	0.36%	–
2024-12-22	–	–	–	0.24%	–
2025-01-19	–	–	–	0.24%	–
2025-01-19	–	–	–	0.24%	–
2025-03-18	–	–	–	–	0.68%
2025-03-30	–	–	–	–	0.86%
2025-04-15	–	–	–	–	0.86%
2025-11-18	–	–	–	–	0.86%
2025-11-21	–	–	–	–	0.86%
2025-12-27	–	–	–	–	0.86%
2025-12-28	–	–	–	–	0.86%
2026-01-01	–	–	–	–	0.86%
2026-01-04	–	–	–	–	0.86%
2026-01-07	–	–	–	–	0.86%
2026-01-12	–	–	–	–	0.86%
2026-01-14	–	–	–	–	0.86%
2026-06-14	–	–	–	–	0.86%

日付	パーセンタイル
2021-04-18	–
2021-09-05	71%
2021-10-10	7%
2021-10-17	71%
2021-11-14	72%
2021-11-21	71%
2021-12-12	72%
2022-01-09	31%
2022-01-16	32%
2022-02-06	34%
2022-02-13	35%
2022-04-03	56%
2022-04-24	57%
2022-07-17	58%
2022-11-13	59%
2022-11-20	58%
2022-12-04	59%
2023-03-12	68%
2023-08-27	69%
2024-02-11	71%
2024-03-31	72%
2024-06-02	72%
2024-09-01	72%
2024-09-08	73%
2024-09-22	72%
2024-10-27	73%
2024-12-22	61%
2025-01-19	62%
2025-01-19	62%
2025-03-18	7%
2025-03-30	73%
2025-04-15	74%
2025-11-18	73%
2025-11-21	74%
2025-12-27	75%
2025-12-28	74%
2026-01-01	75%
2026-01-04	74%
2026-01-07	75%
2026-01-12	74%
2026-01-14	75%
2026-06-14	76%

CVE-2017-3856

CVE の説明

CVE の情報

関連する弱点

メトリクス

Base: Exploitabilty Metrics

Base: Scope Metrics

Base: Impact Metrics

Temporal Metrics

Environmental Metrics

EPSS

EPSSスコア

EPSSパーセンタイル

関連製品

構成 0

参考資料

CVE-2017-3856 : 詳細

CVE-2017-3856

CVE の説明

CVE の情報

関連する弱点

メトリクス

Base: Exploitabilty Metrics

Base: Scope Metrics

Base: Impact Metrics

Temporal Metrics

Environmental Metrics

EPSS

EPSSスコア

EPSSパーセンタイル

関連製品

構成 0

参考資料