Vulnerability Name:

CVE-2021-4217 (CCN-234332)

Assigned:2022-02-22
Published:2022-02-22
Updated:2022-11-29
Summary:Info-ZIP UnZip could allow a remote attacker to execute arbitrary code on the system, caused by a NULL pointer dereference flaw in the handling of Unicode strings. By persuading a victim to open a specially-crafted .zip file, an attacker could exploit this vulnerability to execute arbitrary code or cause the system to crash.
CVSS v3 Severity:3.3 Low (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-4217

Source: CCN
Type: UnZip Web site
UnZip

Source: secalert@redhat.com
Type: Third Party Advisory
secalert@redhat.com

Source: secalert@redhat.com
Type: Exploit, Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com

Source: CCN
Type: Red Hat Bugzilla - Bug 2044583
(CVE-2021-4217) - CVE-2021-4217 unzip: Null pointer dereference in Unicode strings code

Source: secalert@redhat.com
Type: Exploit, Issue Tracking, Third Party Advisory
secalert@redhat.com

Source: XF
Type: UNKNOWN
unzip-cve20214217-code-exec(234332)

Source: CCN
Type: Mend Vulnerability Database
CVE-2021-4217

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/a:unzip_project:unzip:6.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    unzip_project unzip 6.0