Low severity · published Aug 24, 2022
CVE-2021-4217
A flaw was found in unzip
3.3
CVSS
0.6%
EPSS
No
On KEV
Description
A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file, leading to a crash or code execution.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
6.0; 7.0; 8.0; 9.0 · source: NVD
FE
Fedora · Fedoraproject
35 · source: NVD
UN
Unzip · Unzip Project
6.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-4217
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-4217
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-4217
Exploit
https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077
Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=2044583
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