CVE-2021-33640

Published: Dic 19, 2022 Last Modified: Apr 02, 2025 EU-VD ID: EUVD-2021-20317 Aliases: GSD-2021-33640
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,2
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

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).

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0021
Percentile
0,4th
Updated

EPSS Score Trend (Last 90 Days)

416

Use After Free

Stable
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Confidentiality
Potential Impacts:
Modify Memory Dos: Crash, Exit, Or Restart Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: C, C++, Memory-Unsafe
Likelihood of Exploit: High
View CWE Details
Operating System

Openeuler by Openatom

Product Information
Vendor Openatom
Product Openeuler
Version 20.03
cpe:2.3:o:openatom:openeuler:20.03:sp1:*:*:lts:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Openeuler by Openatom

Product Information
Vendor Openatom
Product Openeuler
Version 22.03
cpe:2.3:o:openatom:openeuler:22.03:*:*:*:lts:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Fedora by Fedoraproject

Product Information
Vendor Fedoraproject
Product Fedora
Version 36
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Fedora by Fedoraproject

Product Information
Vendor Fedoraproject
Product Fedora
Version 37
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Openeuler by Openatom

Product Information
Vendor Openatom
Product Openeuler
Version 20.03
cpe:2.3:o:openatom:openeuler:20.03:sp2:*:*:lts:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://www.openeuler.org/en/security/cve/detail/?cveId=CVE…
Vendor Advisory
https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2021-33640&packageN…
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://www.openeuler.org/en/security/cve/detail/?cveId=CVE…
Vendor Advisory
https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2021-33640&packageN…