Memory corruption in ZZIPlib - CVE-2018-7727

Vulnerability identifier: #VU11083

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-2018-7727

CWE-ID: CWE-401

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_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.

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
Ubuntu
Fedora
libzzip-0-13 (Ubuntu package)
libzzip-dev (Ubuntu package)
zziplib-bin (Ubuntu package)
zziplib

Install update from vendor's website.

libzzip-0-13 (Ubuntu package) - addressed in versions Ubuntu Pro, 0.13.62-3.2ubuntu1.1
libzzip-dev (Ubuntu package) - addressed in versions Ubuntu Pro, 0.13.62-3.2ubuntu1.1
zziplib-bin (Ubuntu package) - addressed in versions Ubuntu Pro, 0.13.62-3.2ubuntu1.1
zziplib - update to 0.13.69-1.fc28

• https://github.com/gdraheim/zziplib/issues/40

• Denial of service in ZZIPlib
• Red Hat update for zziplib
• Ubuntu update for zziplib
• Fedora 28 update for zziplib