CVE-2020-7062
HIGH severity · CVSS 7.5 · CWE-476
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)4%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://bugs.php.net/bug.php?id=79221Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.htmlAdvisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00034.htmlAdvisory
- https://security.gentoo.org/glsa/202003-57Advisory
- https://usn.ubuntu.com/4330-1/Advisory
- https://www.debian.org/security/2020/dsa-4717Advisory
- https://www.debian.org/security/2020/dsa-4719Advisory
- https://www.tenable.com/security/tns-2021-14Advisory