clamav clamav CVE-2022-20785 vulnerability in Clamav and Other Products
Published on May 4, 2022

ClamAV HTML Scanning Memory Leak Vulnerability Affecting Cisco Products: April 2022

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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.

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Vulnerability Analysis

CVE-2022-20785 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

What is a Memory Leak Vulnerability?

The software does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is often triggered by improper handling of malformed data or unexpectedly interrupted sessions. In some languages, developers are responsible for tracking memory allocation and releasing the memory. If there are no more pointers or references to the memory, then it can no longer be tracked and identified for release.

CVE-2022-20785 has been classified to as a Memory Leak vulnerability or weakness.


Products Associated with CVE-2022-20785

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2022-20785 are published in these products:

Clamav
 
Cisco Secure Endpoint
 
Canonical Ubuntu Linux
 
Fedora Project Fedora
 
Debian Linux
 

Affected Versions

Cisco AMP for Endpoints Version n/a is affected by CVE-2022-20785

Exploit Probability

EPSS
1.02%
Percentile
76.87%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.