// For flags

CVE-2021-33640

 

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the list() function, it continues to use pointer t: free_longlink_longname(t->th_buf) . As a result, the released memory is used (use-after-free).

Después de tar_close(), libtar.c libera la memoria a la que apunta el puntero t. Después de llamar a tar_close() en la función list(), continúa usando el puntero t: free_longlink_longname(t->th_buf). Como resultado, la memoria liberada se utiliza (use after free).

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-05-28 CVE Reserved
  • 2022-12-19 CVE Published
  • 2024-08-03 CVE Updated
  • 2025-04-03 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-416: Use After Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Huawei
Search vendor "Huawei"
 Openeuler
Search vendor "Huawei" for product "Openeuler"
 20.03
Search vendor "Huawei" for product "Openeuler" and version "20.03"
sp1, lts
Affected
Huawei
Search vendor "Huawei"
 Openeuler
Search vendor "Huawei" for product "Openeuler"
 20.03
Search vendor "Huawei" for product "Openeuler" and version "20.03"
sp2, lts
Affected
Huawei
Search vendor "Huawei"
 Openeuler
Search vendor "Huawei" for product "Openeuler"
 22.03
Search vendor "Huawei" for product "Openeuler" and version "22.03"
lts
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 36
Search vendor "Fedoraproject" for product "Fedora" and version "36"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 37
Search vendor "Fedoraproject" for product "Fedora" and version "37"
-
Affected