Memory corruption in ZZIPlib - CVE-2018-7725

Vulnerability identifier: #VU11084

CSH Severity: Low

CVSS v4: 5.1 [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]

CVE-ID: CVE-2018-7725

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

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.

ZZIPlib
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power
Fedora
zziplib

Install update from vendor's website.

zziplib - update to 0.13.69-1.fc27

• https://github.com/gdraheim/zziplib/issues/39

• Denial of service in ZZIPlib
• Red Hat update for zziplib
• Fedora 27 update for zziplib