SB2018090801 - Multiple vulnerabilities in ZZIPlib

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) 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.

2) Path traversal (CVE-ID: CVE-2018-17828)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in ZZIPlib within the unzzip_cat() function in the bins/unzzipcat-mem.c. A remote attacker can pass specially crafted archive to the application and overwrite arbitrary files on the system.

Remediation

Install update from vendor's website.

References

• https://github.com/gdraheim/zziplib/issues/58
• https://github.com/gdraheim/zziplib/issues/62