A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated, local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017365 advisory.

    A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV)     versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated,     local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability     is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An     attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the     ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-202310-01 (ClamAV: Multiple Vulnerabilities)

  - A vulnerability in the OOXML parsing module in Clam AntiVirus (ClamAV) Software version 0.104.1 and LTS     version 0.103.4 and 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 checks that may result in an     invalid pointer read. An attacker could exploit this vulnerability by sending a crafted OOXML file to an     affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash,     resulting in a denial of service condition. (CVE-2022-20698)

  - 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 CHM 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. (CVE-2022-20770)

  - 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 the TIFF 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. (CVE-2022-20771)

  - 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. (CVE-2022-20785)

  - A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV)     versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated,     local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability     is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An     attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the     ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.
    (CVE-2022-20792)

  - 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.
    (CVE-2022-20796)

  - A vulnerability in the OLE2 file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 could     allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device.The     vulnerability is due to incorrect use of the realloc function that may result in a double-free. An     attacker could exploit this vulnerability by submitting a crafted OLE2 file to be scanned by ClamAV on the     affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash,     resulting in a denial of service condition. (CVE-2022-20803)

  - On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability     in the HFS+ partition file parser of ClamAV versions 1.0.0 and earlier, 0.105.1 and earlier, and 0.103.7     and earlier could allow an unauthenticated, remote attacker to execute arbitrary code. This vulnerability     is due to a missing buffer size check that may result in a heap buffer overflow write. An attacker could     exploit this vulnerability by submitting a crafted HFS+ partition file to be scanned by ClamAV on an     affected device. A successful exploit could allow the attacker to execute arbitrary code with the     privileges of the ClamAV scanning process, or else crash the process, resulting in a denial of service     (DoS) condition. For a description of this vulnerability, see the ClamAV blog     [https://blog.clamav.net/]. (CVE-2023-20032)

  - On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability     in the DMG file parser of ClamAV versions 1.0.0 and earlier, 0.105.1 and earlier, and 0.103.7 and earlier     could allow an unauthenticated, remote attacker to access sensitive information on an affected device.
    This vulnerability is due to enabling XML entity substitution that may result in XML external entity     injection. An attacker could exploit this vulnerability by submitting a crafted DMG file to be scanned by     ClamAV on an affected device. A successful exploit could allow the attacker to leak bytes from any file     that may be read by the ClamAV scanning process. (CVE-2023-20052)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3042 advisory.

  - 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. (CVE-2022-20785)

  - 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 CHM 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. (CVE-2022-20770)

  - 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 the TIFF 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. (CVE-2022-20771)

  - A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV)     versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated,     local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability     is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An     attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the     ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.
    (CVE-2022-20792)

  - 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.
    (CVE-2022-20796)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the b2407db1-d79f-11ec-a15f-589cfc0f81b0 advisory.

  - 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. (CVE-2022-20785)

  - 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 CHM 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. (CVE-2022-20770)

  - 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 the TIFF 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. (CVE-2022-20771)

  - A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV)     versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated,     local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability     is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An     attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the     ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.
    (CVE-2022-20792)

  - 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.
    (CVE-2022-20796)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5423-1 advisory.

    Micha Dardas discovered that ClamAV incorrectly handled parsing CHM files. A remote attacker could     possibly use this issue to cause ClamAV to stop responding, resulting in a denial of service.

    (CVE-2022-20770)

    Micha Dardas discovered that ClamAV incorrectly handled parsing TIFF files. A remote attacker could     possibly use this issue to cause ClamAV to stop responding, resulting in a denial of service.
    (CVE-2022-20771)

    Micha Dardas discovered that ClamAV incorrectly handled parsing HTML files. A remote attacker could     possibly use this issue to cause ClamAV to consume resources, resulting in a denial of service.
    (CVE-2022-20785)

    Micha Dardas discovered that ClamAV incorrectly handled loading the signature database. A remote     attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service, or     possibly execute arbitrary code. (CVE-2022-20792)

    Alexander Patrakov and Antoine Gatineau discovered that ClamAV incorrectly handled the scan verdict cache     check. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of     service, or possibly execute arbitrary code.(CVE-2022-20796)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5423-2 advisory.

    USN-5423-1 fixed several vulnerabilities in ClamAV. This update provides the corresponding update for     Ubuntu 14.04 ESM and 16.04 ESM.



Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:1647-1 advisory.

  - 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 CHM 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. (CVE-2022-20770)

  - 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 the TIFF 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. (CVE-2022-20771)

  - 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. (CVE-2022-20785)

  - A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV)     versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated,     local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability     is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An     attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the     ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.
    (CVE-2022-20792)

  - 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.
    (CVE-2022-20796)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:1644-1 advisory.

  - 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 CHM 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. (CVE-2022-20770)

  - 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 the TIFF 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. (CVE-2022-20771)

  - 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. (CVE-2022-20785)

  - A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV)     versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated,     local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability     is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An     attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the     ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.
    (CVE-2022-20792)

  - 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.
    (CVE-2022-20796)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
313577	Unity Linux 20.1060e / 20.1070e Security Update: clamav (UTSA-2026-017365)	Nessus	Unity Linux Local Security Checks	high
182411	GLSA-202310-01 : ClamAV: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	critical
161837	Debian DLA-3042-1 : clamav - LTS security update	Nessus	Debian Local Security Checks	high
161387	FreeBSD : clamav -- Multiple vulnerabilities (b2407db1-d79f-11ec-a15f-589cfc0f81b0)	Nessus	FreeBSD Local Security Checks	high
161251	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : ClamAV vulnerabilities (USN-5423-1)	Nessus	Ubuntu Local Security Checks	high
161248	Ubuntu 16.04 ESM : ClamAV vulnerabilities (USN-5423-2)	Nessus	Ubuntu Local Security Checks	high
161164	SUSE SLES12 Security Update : clamav (SUSE-SU-2022:1647-1)	Nessus	SuSE Local Security Checks	high
161158	SUSE SLED15 / SLES15 Security Update : clamav (SUSE-SU-2022:1644-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2022-20792

high

Tenable Plugins

high

critical

high

high

high

high

high

high