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.

The remote SUSE Linux SLES11 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:14692-1 advisory.

  - A vulnerability in the Excel XLM macro parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0     and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an     affected device. The vulnerability is due to improper error handling that may result in an infinite loop.
    An attacker could exploit this vulnerability by sending a crafted Excel file to an affected device. An     exploit could allow the attacker to cause the ClamAV scanning process hang, resulting in a denial of     service condition. (CVE-2021-1252)

  - A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1     could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected     device. The vulnerability is due to improper buffer size tracking that may result in a heap buffer over-     read. An attacker could exploit this vulnerability by sending a crafted PDF 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-2021-1404)

  - 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. (CVE-2021-1405)

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-202104-07 (ClamAV: Denial of service)

    A vulnerability has been discovered in ClamAV. Please review the CVE       identifier referenced below for details.
  Impact :

    A remote attacker could cause ClamAV to scan a specially crafted file,       possibly resulting a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4918-1 advisory.

    It was discovered that ClamAV incorrectly handled parsing Excel documents. A remote attacker could     possibly use this issue to cause ClamAV to hang, resulting in a denial of service. (CVE-2021-1252)

    It was discovered that ClamAV incorrectly handled parsing PDF documents. A remote attacker could possibly     use this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2021-1404)

    It was discovered that ClamAV incorrectly handled parsing email. A remote attacker could possibly use this     issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2021-1405)

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.

This update for clamav fixes the following issues :

  - CVE-2021-1252: Fix for Excel XLM parser infinite loop.
    (bsc#1184532)

  - CVE-2021-1404: Fix for PDF parser buffer over-read;
    possible crash. (bsc#1184533)

  - CVE-2021-1405: Fix for mail parser NULL-dereference     crash. (bsc#1184534)

  - Fix errors when scanning files > 4G (bsc#1181256)

  - Update clamav.keyring

  - Update to 0.103.2

This update was imported from the SUSE:SLE-15:Update update project.

This update for clamav fixes the following issues :

CVE-2021-1252: Fix for Excel XLM parser infinite loop. (bsc#1184532)

CVE-2021-1404: Fix for PDF parser buffer over-read; possible crash.
(bsc#1184533)

CVE-2021-1405: Fix for mail parser NULL-dereference crash.
(bsc#1184534)

Fix errors when scanning files > 4G (bsc#1181256)

Update clamav.keyring

Update to 0.103.2

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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.

For Debian 9 stretch, this problem has been fixed in version 0.102.4+dfsg-0+deb9u2.

We recommend that you upgrade your clamav packages.

For the detailed security status of clamav please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/clamav

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Micah Snyder reports : CVE-2021-1252Excel XLM parser infinite loopCVE-2021-1404PDF parser buffer over-read; possible crash.
CVE-2021-1405Mail parser NULL-dereference crash.

ID	Name	Product	Family	Severity
150524	SUSE SLES11 Security Update : clamav (SUSE-SU-2021:14692-1)	Nessus	SuSE Local Security Checks	high
149215	GLSA-202104-07 : ClamAV: Denial of service	Nessus	Gentoo Local Security Checks	high
148819	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : ClamAV vulnerabilities (USN-4918-1)	Nessus	Ubuntu Local Security Checks	high
148699	openSUSE Security Update : clamav (openSUSE-2021-555)	Nessus	SuSE Local Security Checks	high
148639	SUSE SLES12 Security Update : clamav (SUSE-SU-2021:1189-1)	Nessus	SuSE Local Security Checks	high
148636	SUSE SLED15 / SLES15 Security Update : clamav (SUSE-SU-2021:1190-1)	Nessus	SuSE Local Security Checks	high
148623	Debian DLA-2626-1 : clamav security update	Nessus	Debian Local Security Checks	high
148528	SUSE SLES12 Security Update : clamav (SUSE-SU-2021:1174-1)	Nessus	SuSE Local Security Checks	high
148516	FreeBSD : clamav -- Multiple vulnerabilites (9ae2c00f-97d0-11eb-8cd6-080027f515ea)	Nessus	FreeBSD Local Security Checks	high

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