#VU39597 NULL pointer dereference in ZZIPlib - CVE-2017-5980

Vulnerability identifier: #VU39597

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-5980

CWE-ID: CWE-476

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 remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a crafted ZIP file.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ZZIPlib: 0.13.62

---

External links
https://www.debian.org/security/2017/dsa-3878
https://www.securityfocus.com/bid/96268
https://blogs.gentoo.org/ago/2017/02/09/zziplib-null-pointer-dereference-in-zzip_mem_entry_new-memdisk-c/

---

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.