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CVE-2022-20785— ClamAV HTML Scanning Memory Leak Vulnerability Affecting Cisco Products: April 2022

Quick assessment

Affected
Cisco Cisco AMP for Endpoints
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ClamAV（Clam AntiVirus）是Clamav团队的一套免费且开源的杀毒软件。该软件用于检测木马、病毒、恶意软件和其他恶意威胁。 ClamAV 0.104.0版本到0.104.2版本 0.103版本到0.103.5版本存在安全漏洞，该漏洞源于解析 HTML 文件时的内存泄漏。远程攻击者可以将特制的 HTML 文件传递给防病毒软件，触发内存泄漏利用该漏洞执行拒绝服务攻击。

CVSS 7.5 · High EPSS 7.12% · P94

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2022-20785

Vulnerability Information
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Vulnerability Title
ClamAV HTML Scanning Memory Leak Vulnerability Affecting Cisco Products: April 2022
Source: CVE Program / CVE List V5
Vulnerability Description
On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in HTML file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog. This advisory will be updated as additional information becomes available.
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
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: CVE Program / CVE List V5
Vulnerability Title
ClamAV 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ClamAV（Clam AntiVirus）是Clamav团队的一套免费且开源的杀毒软件。该软件用于检测木马、病毒、恶意软件和其他恶意威胁。 ClamAV 0.104.0版本到0.104.2版本 0.103版本到0.103.5版本存在安全漏洞，该漏洞源于解析 HTML 文件时的内存泄漏。远程攻击者可以将特制的 HTML 文件传递给防病毒软件，触发内存泄漏利用该漏洞执行拒绝服务攻击。
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 AMP for Endpoints n/a -

II. Public POCs for CVE-2022-20785

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III. Intelligence Information for CVE-2022-20785

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Vendor Advisories for CVE-2022-20785 (2)

Mailing List Discussions for CVE-2022-20785 (4)

Same Patch Batch · Cisco · 2022-05-04 · 13 CVEs total

CVE-2022-20777 9.9 CRITICAL Cisco Enterprise NFV Infrastructure Software Vulnerabilities
CVE-2022-20779 9.9 CRITICAL Cisco Enterprise NFV Infrastructure Software Vulnerabilities
CVE-2022-20780 9.9 CRITICAL Cisco Enterprise NFV Infrastructure Software Vulnerabilities
CVE-2022-20770 8.6 HIGH ClamAV CHM File Parsing Denial of Service Vulnerability Affecting Cisco Products: April 20
CVE-2022-20771 7.5 HIGH ClamAV TIFF File Parsing Denial of Service Vulnerability Affecting Cisco Products: April 2
CVE-2022-20764 6.5 MEDIUM Cisco TelePresence Collaboration Endpoint and RoomOS Software Vulnerabilities
CVE-2022-20794 6.5 MEDIUM Cisco TelePresence Collaboration Endpoint and RoomOS Software Vulnerabilities
CVE-2022-20796 6.5 MEDIUM ClamAV Truncated File Denial of Service Vulnerability Affecting Cisco Products: April 2022
CVE-2022-20753 4.7 MEDIUM Cisco Small Business RV Series Routers Remote Code Execution Vulnerability
CVE-2022-20801 4.7 MEDIUM Cisco Small Business RV Series Routers Command Injection Vulnerabilities
CVE-2022-20799 4.7 MEDIUM Cisco Small Business RV Series Routers Command Injection Vulnerabilities
CVE-2022-20734 4.4 MEDIUM Cisco SD-WAN vManage Software Information Disclosure Vulnerability

IV. Related Vulnerabilities

Same product: Cisco AMP for Endpoints
Same vendor: Cisco
Same weakness: CWE-401

V. Comments for CVE-2022-20785

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