Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2020-7062

NULL Pointer Dereference

Published: Feb 27, 2020 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
LOW
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2020-7062
CWEhttps://cwe.mitre.org/data/definitions/476.html

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.

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

NameVendorStart VersionEnd Version
PhpPhp7.2.0 (including)7.2.27 (including)
PhpPhp7.3.0 (including)7.3.14 (including)
PhpPhp7.4.0 (including)7.4.2 (including)
Red Hat Enterprise Linux 8RedHatphp:7.3-8020020200715124551.ceb1cf90*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-php73-php-0:7.3.20-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-php73-php-0:7.3.20-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-php73-php-0:7.3.20-1.el7*
Php5Ubuntuesm-infra-legacy/trusty*
Php5Ubuntutrusty*
Php5Ubuntutrusty/esm*
Php7.0Ubuntuesm-infra/xenial*
Php7.0Ubuntuxenial*
Php7.2Ubuntubionic*
Php7.2Ubuntuesm-infra/bionic*
Php7.3Ubuntueoan*
Php7.3Ubuntuupstream*
Php7.4Ubuntutrusty*
Php7.4Ubuntuupstream*

Potential Mitigations

References

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