Facebook Google Plus Twitter LinkedIn YouTube RSS Menu Search Resource - BlogResource - WebinarResource - ReportResource - Eventicons_066 icons_067icons_068icons_069icons_070

Critical Cisco Vulnerabilities Across Multiple Products, Exploit Code for CVE-2019-1913 Reportedly Released

Cisco published new advisories for Integrated Management Controller (IMC) and Unified Computing System (UCS) Director, and updates for Small Business 220 Series Smart Switches that include the existence of public exploit code. 

Background

On August 21, Cisco published 27 new advisories and updated six advisories across a variety of its products.

Analysis

Twelve of the advisories address vulnerabilities in Cisco Integrated Management Controller (IMC) used to manage Cisco Unified Computing System (UCS) C-Series Rack Servers and S-Series Storage Servers. Six advisories are for vulnerabilities affecting Cisco IMC Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data. Four of the six advisories are rated by Cisco as Critical.

CVE产品ImpactTypeCVSSv3 (Vendor)Severity
CVE-2019-1938Cisco UCS Director and Cisco UCS Director Express for Big Data APIAuthentication BypassUnauthenticated9.8Critical
CVE-2019-1935Cisco IMC Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big DataUser Default CredentialsUnauthenticated9.8Critical
CVE-2019-1937Cisco IMC Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big DataAuthentication BypassUnauthenticated9.8Critical
CVE-2019-1974Cisco IMC Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big DataAuthentication BypassUnauthenticated9.8Critical
CVE-2019-12634Cisco IMC Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big DataCommand InjectionUnauthenticated8.6High
CVE-2019-1936Cisco IMC Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big DataCommand InjectionAuthenticated7.2High

Five of the six vulnerabilities could be exploited by an unauthenticated, remote attacker sending specially crafted requests to a vulnerable system. CVE-2019-1936 can only be exploited by an authenticated, remote attacker who is capable of logging into the vulnerable management interface. However, with CVE-2019-1935, an attacker could exploit this vulnerability by using the ‘scpuser’ account. According to Cisco, this default account has “incorrect permission settings” and uses an “undocumented default password” to log into a vulnerable system. Tenable has not yet confirmed whether use of the scpuser account would allow an attacker to exploit CVE-2019-1936.

Cisco also patched several additional IMC vulnerabilities this month.

CVEImpactCVSSv3Severity
CVE-2019-1907Privilege Escalation8.8High
CVE-2019-1865Command Injection8.8High
CVE-2019-1864Command Injection8.8High
CVE-2019-1900Denial of Service7.5High
CVE-2019-1908Information Disclosure7.5High
CVE-2019-1896Command Injection7.2High
CVE-2019-1885Command Injection7.2High
CVE-2019-1634Command Injection7.2High
CVE-2019-1850Command Injection7.2High
CVE-2019-1871Buffer Overflow7.2High
CVE-2019-1883Command Injection7.0High
CVE-2019-1863Privilege Escalation6.5High

In addition to these new advisories, Cisco released several updates for previously published advisories. This includes updates to the recently reported vulnerabilities in the Cisco Small Business 220 Series Smart Switches from August 6.

CVEImpactCVSSv3Tenable VPRSeverity
CVE-2019-1913Remote Code Execution9.88.9Critical
CVE-2019-1912Authentication Bypass9.18.3Critical
CVE-2019-1914Command Injection7.28.6Medium

Two of the three 220 Series Smart Switches vulnerabilities are rated as Critical and exist within the web management interface of these devices. Sending specially crafted requests to the vulnerable interface could allow a remote attacker to execute arbitrary code (CVE-2019-1913) or modify the device configuration (CVE-2019-1912). CVE-2019-1914 requires an attacker to be authenticated on a vulnerable interface and have level 15 permissions.

Additionally, Cisco updated its advisory for CVE-2019-1649, the Secure Boot Hardware Tampering Vulnerability known as Thrangrycat, to account for additional vulnerable products.

Proof of concept

Cisco’s Product Security Incident Response Team (PSIRT) notes in the updated advisories for the Small Business 220 Series Smart Switches that they are aware of the presence of public exploit code for these devices. However, at the time this blog post was published, Tenable has not identified a proof of concept (PoC) for these vulnerabilities.

解决方案

Cisco has released updates for each of the affected products. The affected versions and relevant fixed versions can be found under the advisory pages. Customers should obtain and install these updates as soon as possible.

Identifying affected systems

A list of Tenable plugins to identify these vulnerabilities will appear here as they’re released.

Get more information 

Join Tenable's Security Response Team on the Tenable Community.

Learn more about Tenable, the first Cyber Exposure platform for holistic management of your modern attack surface.

Get a free 60-day trial of Tenable.io Vulnerability Management.

相关文章

订阅 Tenable 博客

订阅
免费试用 立即购买

选择 Tenable.io

免费试用 30 天

可全面访问基于云的现代化漏洞管理平台,从而以无可比拟的精确度发现并追踪所有资产。 立即注册。

立即购买 Tenable.io

可全面访问基于云的现代化漏洞管理平台,从而以无可比拟的精确度发现并追踪所有资产。 立即购买年度订阅。

65资产

$2,275

立即购买

免费试用 立即购买

免费试用 Nessus Professional

免费试用 7 天

Nessus® 是当今市场上功能最全面的漏洞扫描器。Nessus Professional 可帮助自动化漏洞扫描流程、节省合规周期的时间,并让您调动起 IT 团队的积极性。

购买 Nessus Professional

Nessus® 是当今市场上功能最全面的漏洞扫描器。Nessus Professional 可帮助自动化漏洞扫描流程、节省合规周期的时间,并让您调动起 IT 团队的积极性。

购买多年期许可,即享优惠价格添加高级版支持,获取一年 365 天、一天 24 小时的电话、邮件、社区和聊天支持。完整介绍见此处。

免费试用 立即购买

试用 Tenable.io Web Application Scanning

免费试用 30 天

完整享有专为现代化应用程序而设、属于 Tenable.io 平台组成部分的最新 Web 应用程序扫描功能。可安全扫描全部在线资产组合的漏洞,具有高度准确性,而且无需繁重的手动操作或中断关键的 Web 应用程序。 立即注册。

购买 Tenable.io Web Application Scanning

可全面访问基于云的现代化漏洞管理平台,从而以无可比拟的精确度发现并追踪所有资产。 立即购买年度订阅。

5 FQDN

$3,578

立即购买

免费试用 联系销售人员

试用 Tenable.io Container Security

免费试用 30 天

完整获得已集成至漏洞管理平台之唯一容器安全产品的功能。监控容器映像中的漏洞、恶意软件和策略违规。与持续集成和持续部署 (CI/CD) 系统进行整合,以支持 DevOps 实践、增强安全性并支持企业政策合规。

购买 Tenable.io Container Security

Tenable.io Container Security 经由与构建流程的集成,可供全面了解容器映像的安全性,包括漏洞、恶意软件和策略违规,借以无缝且安全地启用 DevOps 流程。

了解有关 Industrial Security 的详情

获取 Tenable.sc 演示

请将您的联系方式填写在下方表格中,我们的销售代表很快与您联系安排演示。您也可以写下简短评论(不得超过 255 个字符)。请注意,带星号 (*) 的字段为必填项。

免费试用 联系销售人员

试用 Tenable Lumin

免费试用 30 天

通过 Tenable Lumin 实现对 Cyber Exposure 的直观呈现及探索,长期追踪风险降低状况,并比照同行业者进行基准衡量。

购买 Tenable Lumin

联系销售代表,了解 Lumin 如何帮助您获取整个企业的洞见并管理网络风险。