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CVE-2021-33640

CVSS 6.2 · Medium EPSS 0.65% · P48

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-33640

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
openEuler 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
openEuler是开放原子开源基金会的一款操作系统。 openEuler-22.03-LTS、openEuler-20.03-LTS-SP1和openEuler-20.03-LTS-SP3存在安全漏洞，该漏洞源于释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
openEuleropenEuler 22.03 LTS libtar 1.2.20-21 -
openEuleropenEuler 20.03 LTS SP1 libtar 1.2.20-19 -
openEuleropenEuler 20.03 LTS SP3 libtar 1.2.20-19 -

II. Public POCs for CVE-2021-33640

#POC DescriptionSource LinkShenlong Link
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III. Intelligence Information for CVE-2021-33640

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Mailing List Discussions for CVE-2021-33640 (1)

Other References for CVE-2021-33640 (1)

IV. Related Vulnerabilities

Same vendor: openEuler
Same weakness: CWE-416

V. Comments for CVE-2021-33640

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