CVE-2021-33643
libtar: out-of-bounds read in gnu_longlink
Severity Score
9.1
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read.
Un atacante que envía un archivo tar diseñado con el tamaño de la estructura de encabezado siendo 0 puede ser capaz de desencadenar una llamada de malloc(0) para una variable gnu_longlink, causando una lectura fuera de límites
A flaw was found in libtar. This flaw allows an attacker who submits a crafted tar file with the size in the header struct being 0 to trigger a calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-05-28 CVE Reserved
- 2022-08-09 CVE Published
- 2024-03-30 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-125: Out-of-bounds Read
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1807 | Broken Link |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Feep Search vendor "Feep" | Libtar Search vendor "Feep" for product "Libtar" | < 1.2.21 Search vendor "Feep" for product "Libtar" and version " < 1.2.21" | - |
Affected
| ||||||
| 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" | sp3, 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" | 35 Search vendor "Fedoraproject" for product "Fedora" and version "35" | - |
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
| ||||||