SB2018090427 - Fedora 27 update for zziplib
Published: September 4, 2018 Updated: April 24, 2025
Security Bulletin ID
SB2018090427
Severity
Low
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Memory corruption (CVE-ID: CVE-2018-6869)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the __zzip_parse_root_directory function of zzip/zip.c due to uncontrolled memory allocation. A remote attacker can trick the victim into opening a specially crafted zip file, trigger memory corruption and cause the application to crash.
2) Memory corruption (CVE-ID: CVE-2018-6484)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the __zzip_fetch_disk_trailer function of zzip/zip.c due to memory alignment error and bus error. A remote attacker can submit a specially crafted zip file, trigger memory corruption and cause the service to crash.
3) Memory corruption (CVE-ID: CVE-2018-7725)
The vulnerability allows a local attacker to cause DoS condition on the target system.The weakness exists in the zzip_disk_fread function due to boundary error. A local attacker can send a specially crafted input, trigger invalid memory address dereference condition and cause the service to crash.
Remediation
Install update from vendor's website.