SB2017081725 - Ubuntu update for ClamAV
Published: August 17, 2017
Security Bulletin ID
SB2017081725
Severity
High
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2017-6418)
The vulnerability allows a rmeote attacker to cause DoS condition on the target system.The weakness exists in libclamav/message.c due to out-of-bounds read. A remote attacker can trick the victim into opening a specially crafted e-mail message, trigger memory corruption and cause the service to crash.
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) Use-after-free error (CVE-ID: CVE-2017-6420)
The vulnerability allows a rmeote attacker to cause DoS condition on the target system.The weakness exists in libclamav/wwunpack.c due to use-after-free error. A remote attacker can trick the victim into opening a specially crafted PE file with WWPack compression, trigger memory corruption and cause the service to crash.
Remediation
Install update from vendor's website.