#VU11085 Memory corruption in ZZIPlib - CVE-2018-7726

Vulnerability identifier: #VU11085

Vulnerability risk: Low

CVSSv4.0: 2 [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]

CVE-ID: CVE-2018-7726

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
ZZIPlib
Universal components / Libraries / Libraries used by multiple products

Vendor: zziplib.sourceforge.net

Description
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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ZZIPlib: 0.13.68

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External links
https://github.com/gdraheim/zziplib/issues/41

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.