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Debian LTS Advisory ([SECURITY] [DLA 1261-1] clamav security update)

Information

Severity

Severity

Critical

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

10.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

4 years ago

Modified

Modified

3 years ago

Summary

Multiple vulnerabilities have been discovered in clamav, the ClamAV AntiVirus toolkit for Unix. Effects range from denial of service to potential arbitrary code execution. Additionally, this version fixes a longstanding issue that has recently resurfaced whereby a malformed virus signature database can cause an application crash and denial of service. CVE-2017-12374 ClamAV has a use-after-free condition arising from a lack of input validation. A remote attacker could exploit this vulnerability with a crafted email message to cause a denial of service. CVE-2017-12375 ClamAV has a buffer overflow vulnerability arising from a lack of input validation. An unauthenticated remote attacker could send a crafted email message to the affected device, triggering a buffer overflow and potentially a denial of service when the malicious message is scanned. CVE-2017-12376 ClamAV has a buffer overflow vulnerability arising from improper input validation when handling Portable Document Format (PDF) files. An unauthenticated remote attacker could send a crafted PDF file to the affected device, triggering a buffer overflow and potentially a denial of service or arbitrary code execution when the malicious file is scanned. CVE-2017-12377 ClamAV has a heap overflow vulnerability arising from improper input validation when handling mew packets. An attacker could exploit this by sending a crafted message to the affected device, triggering a denial of service or possible arbitrary code execution when the malicious file is scanned. CVE-2017-12378 ClamAV has a buffer overread vulnerability arising from improper input validation when handling tape archive (TAR) files. An unauthenticated remote attacker could send a crafted TAR file to the affected device, triggering a buffer overread and potentially a denial of service when the malicious file is scanned. CVE-2017-12379 ClamAV has a buffer overflow vulnerability arising from improper input validation in the message parsing function. An unauthenticated remote attacker could send a crafted email message to the affected device, triggering a buffer overflow and potentially a denial of service or arbitrary code execution when the malicious message is scanned. CVE-2017-12380 ClamAV has a NULL dereference vulnerability arising from improper input validation in the message parsing function. An unauthenticated remote attacker could send a crafted email message to the affected device, triggering a NULL pointer dereference, which may result in a denial of service. Debian Bug #824196 A malformed virus signature database could cause an application crash and denial of service.

Affected Software

Affected Software

clamav on Debian Linux

Detection Method

Detection Method

This check tests the installed software version using the apt package manager.

Solution

Solution

For Debian 7 'Wheezy', these problems have been fixed in version 0.99.2+dfsg-0+deb7u4. We recommend that you upgrade your clamav packages.