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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.60% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- php/php · opensuse/leap · debian/debian linux · canonical/ubuntu linux
- Source
- security@php.net
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.htmlMailing List, Third Party Advisory
- https://bugs.php.net/bug.php?id=79221Exploit, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00034.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-57Third Party Advisory
- https://usn.ubuntu.com/4330-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4717Third Party Advisory
- https://www.debian.org/security/2020/dsa-4719Third Party Advisory
- https://www.tenable.com/security/tns-2021-14Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.htmlMailing List, Third Party Advisory
- https://bugs.php.net/bug.php?id=79221Exploit, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00034.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-57Third Party Advisory
- https://usn.ubuntu.com/4330-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4717Third Party Advisory
- https://www.debian.org/security/2020/dsa-4719Third Party Advisory
- https://www.tenable.com/security/tns-2021-14Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.