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CVE-2021-1285— Multiple Cisco Products SNORT Ethernet Frame Decoder Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco UTD SNORT IPS Engine Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Snort是 （Snort）开源的一个应用系统。提供一系列规则来帮助定义恶意网络活动，并使用这些规则查找与其匹配的数据包并为用户生成警报。 Cisco 多款产品中的Snort存在安全漏洞，攻击者可利用该漏洞导致管理员无法登录到该设备或该设备无法正确启动。以下产品和版本受到影响：1000 Series Integrated Services Routers (ISRs)，4000 Series Integrated Services Routers (ISRs)，Catalyst 8000V Edge So

AI Predicted 5.9 Difficulty: Moderate EPSS 2.94% · P87
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I. Basic Information for CVE-2021-1285

Vulnerability Information
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Vulnerability Title
Multiple Cisco Products SNORT Ethernet Frame Decoder Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple Cisco products are affected by a vulnerability in the Ethernet Frame Decoder of the Snort detection engine that could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper handling of error conditions when processing Ethernet frames. An attacker could exploit this vulnerability by sending malicious Ethernet frames through an affected device. A successful exploit could allow the attacker to exhaust disk space on the affected device, which could result in administrators being unable to log in to the device or the device being unable to boot up correctly.Note: Manual intervention is required to recover from this situation. Customers are advised to contact the Cisco Technical Assistance Center (TAC) to help recover a device in this condition.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Snort安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Snort是 （Snort）开源的一个应用系统。提供一系列规则来帮助定义恶意网络活动，并使用这些规则查找与其匹配的数据包并为用户生成警报。 Cisco 多款产品中的Snort存在安全漏洞，攻击者可利用该漏洞导致管理员无法登录到该设备或该设备无法正确启动。以下产品和版本受到影响：1000 Series Integrated Services Routers (ISRs)，4000 Series Integrated Services Routers (ISRs)，Catalyst 8000V Edge So
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco UTD SNORT IPS Engine Software 16.12.3 -

II. Public POCs for CVE-2021-1285

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III. Intelligence Information for CVE-2021-1285

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Vendor Advisories for CVE-2021-1285 (1)

Same Patch Batch · Cisco · 2024-11-18 · 28 CVEs total

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CVE-2020-26073 7.5 HIGH Cisco SD-WAN vManage Directory Traversal Vulnerability
CVE-2021-1440 6.8 MEDIUM Cisco IOS XR Software BGP Resource Public Key Infrastructure Denial of Service Vulnerabili
CVE-2021-1232 6.5 MEDIUM Cisco SD-WAN vManage Information Disclosure Vulnerability
CVE-2021-1379 6.5 MEDIUM Cisco IP Phones Cisco Discovery Protocol and Link Layer Discovery Protocol Remote Code Exe
CVE-2020-3539 6.3 MEDIUM Cisco Data Center Network Manager Authorization Bypass Vulnerability
CVE-2021-1444 6.1 MEDIUM Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD)
CVE-2020-3431 6.1 MEDIUM Cisco Small Business RV Series Routers Cross-Site Scripting Vulnerability
CVE-2020-26067 5.4 MEDIUM Cisco Webex Teams Web Interface Cross-Site Scripting Vulnerability
CVE-2020-26063 5.4 MEDIUM Cisco Integrated Management Controller Software Authorization Bypass Vulnerability
CVE-2020-3548 5.3 MEDIUM Cisco Email Security Appliance Denial Of Service Vulnerability
CVE-2021-1234 5.3 MEDIUM Cisco SD-WAN vManage Information Disclosure Vulnerabilities
CVE-2021-1132 5.3 MEDIUM Cisco Network Services Orchestrator Path Traversal Vulnerability
CVE-2021-1424 5.3 MEDIUM Cisco ASR 5000 Series Software (StarOS) ipsecmgr Process Denial of Service Vulnerability
CVE-2020-26062 5.3 MEDIUM Cisco Integrated Management Controller Username Enumeration Vulnerability
CVE-2021-1461 4.9 MEDIUM Cisco SD-WAN Software Signature Verification Bypass Vulnerability
CVE-2020-3538 4.6 MEDIUM Cisco Data Center Network Manager Path Traversal Vulnerability
CVE-2021-1410 4.3 MEDIUM Cisco Webex Meetings Unauthorized Distribution List Update Vulnerability

Showing top 20 of 28 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco UTD SNORT IPS Engine Software
Same vendor: Cisco
Same weakness: CWE-770

V. Comments for CVE-2021-1285

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