Executive Summary

Informations
Name CVE-2021-21708 First vendor Publication 2022-02-27
Vendor Cve Last vendor Modification 2022-10-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21708

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 891

Sources (Detail)

Source Url
CONFIRM https://bugs.php.net/bug.php?id=81708
https://security.netapp.com/advisory/ntap-20220325-0004/
GENTOO https://security.gentoo.org/glsa/202209-20

Alert History

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Date Informations
2024-02-02 02:22:12
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2024-02-01 12:22:53
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2023-11-10 02:11:05
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2023-09-05 13:16:30
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2023-09-05 01:22:27
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2023-09-02 13:15:12
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2023-09-02 01:22:47
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2023-08-12 13:21:06
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2023-08-12 01:22:00
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2023-08-11 13:13:39
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2023-08-11 01:22:41
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2023-08-06 13:11:44
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2023-08-06 01:21:44
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2023-08-04 13:12:05
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2023-08-04 01:22:05
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2023-07-14 13:12:07
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2023-07-14 01:21:54
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2023-03-29 02:14:28
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2023-03-28 12:22:09
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2022-10-11 05:27:33
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2022-10-11 01:21:42
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2022-10-07 21:27:34
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2022-09-29 21:27:33
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2022-04-19 00:23:07
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2022-03-25 12:52:42
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2022-03-08 05:22:54
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2022-02-28 17:22:54
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2022-02-27 13:22:57
  • First insertion