SB2018031804 - Arch Linux update for clamav

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Integer overflow (CVE-ID: CVE-2012-6706)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow when processing .rar archives in unrar 5.5.4. A remote unauthenticated attacker can create a specially crafted archive, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Heap-based buffer overflow (CVE-ID: CVE-2017-6419)

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists due to heap-based buffer overflow. A remote attacker can send a specially crafted CHM file, trick the victim into opening it and cause the service to crash or execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

3) Stack-based buffer over-read (CVE-ID: CVE-2017-11423)

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the cabd_read_string function due to stack-based buffer over-read. A remote attacker can send a specially crafted CAB file, trick the victim into opening it, trigger memory corruption and cause the service to crash.

4) Out-of-bounds read (CVE-ID: CVE-2018-1000085)

The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.

The weakness exists in the xar_hash_check() function due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted XAR file, trick the victim into opening it, trigger out-of-bounds heap memory read and cause the service to crash.

Remediation

Install update from vendor's website.

References

• https://security.archlinux.org/advisory/ASA-201803-14