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CVE-2021-1405— Clam AntiVirus (ClamAV) PDF Parser Denial of Service Vulnerability

Quick assessment

Affected
Cisco ClamAV
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.

Clam AntiVirus是ClamAV（Clamav）团队的一款用于检测木马，病毒，恶意软件和其他恶意威胁的开源杀毒引擎。 Clam AntiVirus 存在安全漏洞，攻击者可利用该漏洞可以通过ClamAV的邮件解析器强制取消对空指针的引用，从而触发拒绝服务。

CVSS 7.5 · High EPSS 3.03% · P87
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I. Basic Information for CVE-2021-1405

Vulnerability Information
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Vulnerability Title
Clam AntiVirus (ClamAV) PDF Parser Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the email parsing module in Clam AntiVirus (ClamAV) Software version 0.103.1 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper variable initialization that may result in an NULL pointer read. An attacker could exploit this vulnerability by sending a crafted email to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process crash, resulting in a denial of service condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Clam AntiVirus 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Clam AntiVirus是ClamAV（Clamav）团队的一款用于检测木马，病毒，恶意软件和其他恶意威胁的开源杀毒引擎。 Clam AntiVirus 存在安全漏洞，攻击者可利用该漏洞可以通过ClamAV的邮件解析器强制取消对空指针的引用，从而触发拒绝服务。
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 ClamAV unspecified ~ 0.103.1 -

II. Public POCs for CVE-2021-1405

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III. Intelligence Information for CVE-2021-1405

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Vendor Advisories for CVE-2021-1405 (1)

Mailing List Discussions for CVE-2021-1405 (1)

Security Blog Posts for CVE-2021-1405 (1)

Same Patch Batch · Cisco · 2021-04-08 · 29 CVEs total

CVE-2021-1459 9.8 CRITICAL Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1362 8.8 HIGH Cisco Unified Communications Products Remote Code Execution Vulnerability
CVE-2021-1137 7.8 HIGH Cisco SD-WAN vManage Software Vulnerabilities
CVE-2021-1480 7.8 HIGH Cisco SD-WAN vManage Software Vulnerabilities
CVE-2021-1479 7.8 HIGH Cisco SD-WAN vManage Software Vulnerabilities
CVE-2021-1404 7.5 HIGH Clam AntiVirus (ClamAV) Email Parser Denial of Service Vulnerability
CVE-2021-1252 7.5 HIGH Clam AntiVirus (ClamAV) Excel XLM Parser Denial of Service Vulnerability
CVE-2021-1251 7.4 HIGH Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities
CVE-2021-1308 7.4 HIGH Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities
CVE-2021-1309 7.4 HIGH Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities
CVE-2021-1386 7.0 HIGH Cisco Advanced Malware Protection for Endpoints Windows Connector, ClamAV for Windows, an
CVE-2021-1485 6.6 MEDIUM Cisco IOS XR Software Command Injection Vulnerability
CVE-2021-1475 6.5 MEDIUM Cisco Umbrella Link and CSV Formula Injection Vulnerabilities
CVE-2021-1474 6.5 MEDIUM Cisco Umbrella Link and CSV Formula Injection Vulnerabilities
CVE-2021-1413 6.3 MEDIUM Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Authenticated Remote C
CVE-2021-1414 6.3 MEDIUM Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Authenticated Remote C
CVE-2021-1415 6.3 MEDIUM Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Authenticated Remote C
CVE-2021-1407 6.1 MEDIUM Cisco Unified Communications Products Cross-Site Scripting Vulnerabilities
CVE-2021-1380 6.1 MEDIUM Cisco Unified Communications Products Cross-Site Scripting Vulnerabilities
CVE-2021-1463 6.1 MEDIUM Cisco Unified Intelligence Center Reflected Cross-Site Scripting Vulnerability

Showing top 20 of 29 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: ClamAV
Same vendor: Cisco
Same weakness: CWE-120

V. Comments for CVE-2021-1405

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