SB2018103013 - Red Hat update for zziplib
Published: October 30, 2018
Security Bulletin ID
SB2018103013
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Memory corruption (CVE-ID: CVE-2018-7725)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear
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.
2) Memory corruption (CVE-ID: CVE-2018-7726)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in the __zzip_parse_root_directory function due to boundary error. A local attacker can supply a specially crafted .zip file to be processed, trigger a bus error and cause the service to crash.
3) Memory corruption (CVE-ID: CVE-2018-7727)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in the zzip_mem_disk_new function due to boundary error. A local attacker can send a specially crafted input, trigger memory leaks and cause the service to crash.
Remediation
Install update from vendor's website.