NULL pointer dereference in Php
CVE-2020-7062
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.
EPSS: 0.036 (88.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Php
- Php Group — versions 7.3.x, 7.4.x, 7.2.x
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Debian Debian_linux — versions 8.0, 9.0, 10.0
- Opensuse Leap — versions 15.1
Weakness classification (CWE)
References
- security@php.net (Exploit, x_refsource_MISC, Vendor Advisory)
- security@php.net (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- security@php.net (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- security@php.net (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@php.net (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@php.net (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@php.net (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security@php.net (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7062?
- CVE-2020-7062 is a high-severity vulnerability in Php, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2020-02-27.
- How severe is CVE-2020-7062?
- High severity. CVSS v3 base score is 7.5 out of 10.