Vulnerability identifier: #VU68298
Vulnerability risk: Medium
CVSSv3.1: 6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]
CVE-ID:
CWE-ID:
CWE-476
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
UnZip
Client/Desktop applications /
Software for archiving
Vendor: Info-ZIP
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 in unzip when handling Unicode strings. A remote attacker can trick the victim to open a specially crafted archive and perform a denial of service (DoS) attack.
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versions
UnZip: 5.2 - 6.10c22
External links
http://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077
http://bugzilla.redhat.com/show_bug.cgi?id=2044583
http://access.redhat.com/security/cve/CVE-2021-4217
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.