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CVE-2020-7062

Good to know:

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Date: February 27, 2020

In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload procedure would try to clean up data that does not exist and encounter null pointer dereference, which would likely lead to a crash.

Language: C

Severity Score

Related Resources (12)

https://nvd.nist.gov/vuln/detail/CVE-2020-7062
https://bugs.php.net/bug.php?id=79221
https://www.debian.org/security/2020/dsa-4717
https://security.gentoo.org/glsa/202003-57
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.html
https://lists.debian.org/debian-lts-announce/2020/03/msg00034.html
https://usn.ubuntu.com/4330-1/
https://www.tenable.com/security/tns-2021-14
https://security-tracker.debian.org/tracker/CVE-2020-7062
https://access.redhat.com/security/cve/CVE-2020-7062
https://www.debian.org/security/2020/dsa-4719
https://www.mend.io/vulnerability-database/CVE-2020-7062

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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