CVE-2022-20796— ClamAV Truncated File Denial of Service Vulnerability Affecting Cisco Products: April 2022
Quick assessment
Affected
Cisco Cisco AMP for Endpoints
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.
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 0.104.1版本到0.104.2版本 0.103.4版本到0.103.5版本存在代码问题漏洞，该漏洞源于扫描判定缓存检查中的 NULL 指针取消引用错误。远程攻击者可以将特制数据传递给应用程序利用该漏洞执行拒绝服务 (DoS) 攻击。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2022-20796
Vulnerability Information
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Vulnerability Title
ClamAV Truncated File Denial of Service Vulnerability Affecting Cisco Products: April 2022
Source: CVE Program / CVE List V5
Vulnerability Description
On May 4, 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 Clam AntiVirus (ClamAV) versions 0.103.4, 0.103.5, 0.104.1, and 0.104.2 could allow an authenticated, local attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
非可信指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
ClamAV 代码问题漏洞
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 0.104.1版本到0.104.2版本 0.103.4版本到0.103.5版本存在代码问题漏洞，该漏洞源于扫描判定缓存检查中的 NULL 指针取消引用错误。远程攻击者可以将特制数据传递给应用程序利用该漏洞执行拒绝服务 (DoS) 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-2022-20796
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2022-20796 (2)
-
https://security.gentoo.org/glsa/202310-01 vendor-advisory
Mailing List Discussions for CVE-2022-20796 (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-2022-20785 | 7.5 HIGH | ClamAV HTML Scanning Memory Leak Vulnerability Affecting Cisco Products: April 2022 |
| 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-2022-20753 | 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 |
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V. Comments for CVE-2022-20796
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