SB2019080618 - Red Hat update for zziplib
Published: August 6, 2019
Security Bulletin ID
SB2019080618
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Memory corruption (CVE-ID: CVE-2018-6541)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in __zzip_fetch_disk_trailer in zzip/zip.c due to bus error caused by loading of a misaligned address when handling disk64_trailer local entries. A remote attacker can submit a specially crafted zip file, trigger memory corruption and cause the service to crash.
2) Memory leak (CVE-ID: CVE-2018-16548)
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists due to a memory leak in the __zzip_parse_root_directory function, as defined in the zip.c source code file. A local attacker can supply specially crafted input and cause the service to crash.
Remediation
Install update from vendor's website.