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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-21703

In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25 and 8.0.x below 8.0.12, when running PHP FPM SAPI with main FPM daemon process running as root and child worker processes running as lower-privileged users, it is possible for the child processes to access memory shared with the main process and write to it, modifying it in a way that would cause the root process to conduct invalid memory reads and writes, which can be used to escalate privileges from local unprivileged user to the root user.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 33.9%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 6.9
References
Products affected by CVE-2021-21703
  • Netapp » Clustered Data Ontap » Version: N/A
    cpe:2.3:a:netapp:clustered_data_ontap:-
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.0.0.0
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.1
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.2
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.2.1
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.2.2
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.3
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.3.0.0
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.4
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.4.0.0
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.4.0.5
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.5.0
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:8.5.0.2
  • Php » Php » Version: 7.3.0
    cpe:2.3:a:php:php:7.3.0
  • Php » Php » Version: 7.3.1
    cpe:2.3:a:php:php:7.3.1
  • Php » Php » Version: 7.3.10
    cpe:2.3:a:php:php:7.3.10
  • Php » Php » Version: 7.3.11
    cpe:2.3:a:php:php:7.3.11
  • Php » Php » Version: 7.3.12
    cpe:2.3:a:php:php:7.3.12
  • Php » Php » Version: 7.3.13
    cpe:2.3:a:php:php:7.3.13
  • Php » Php » Version: 7.3.14
    cpe:2.3:a:php:php:7.3.14
  • Php » Php » Version: 7.3.15
    cpe:2.3:a:php:php:7.3.15
  • Php » Php » Version: 7.3.16
    cpe:2.3:a:php:php:7.3.16
  • Php » Php » Version: 7.3.17
    cpe:2.3:a:php:php:7.3.17
  • Php » Php » Version: 7.3.18
    cpe:2.3:a:php:php:7.3.18
  • Php » Php » Version: 7.3.19
    cpe:2.3:a:php:php:7.3.19
  • Php » Php » Version: 7.3.2
    cpe:2.3:a:php:php:7.3.2
  • Php » Php » Version: 7.3.20
    cpe:2.3:a:php:php:7.3.20
  • Php » Php » Version: 7.3.21
    cpe:2.3:a:php:php:7.3.21
  • Php » Php » Version: 7.3.22
    cpe:2.3:a:php:php:7.3.22
  • Php » Php » Version: 7.3.23
    cpe:2.3:a:php:php:7.3.23
  • Php » Php » Version: 7.3.24
    cpe:2.3:a:php:php:7.3.24
  • Php » Php » Version: 7.3.25
    cpe:2.3:a:php:php:7.3.25
  • Php » Php » Version: 7.3.26
    cpe:2.3:a:php:php:7.3.26
  • Php » Php » Version: 7.3.27
    cpe:2.3:a:php:php:7.3.27
  • Php » Php » Version: 7.3.28
    cpe:2.3:a:php:php:7.3.28
  • Php » Php » Version: 7.3.29
    cpe:2.3:a:php:php:7.3.29
  • Php » Php » Version: 7.3.3
    cpe:2.3:a:php:php:7.3.3
  • Php » Php » Version: 7.3.30
    cpe:2.3:a:php:php:7.3.30
  • Php » Php » Version: 7.3.31
    cpe:2.3:a:php:php:7.3.31
  • Php » Php » Version: 7.3.4
    cpe:2.3:a:php:php:7.3.4
  • Php » Php » Version: 7.3.5
    cpe:2.3:a:php:php:7.3.5
  • Php » Php » Version: 7.3.6
    cpe:2.3:a:php:php:7.3.6
  • Php » Php » Version: 7.3.7
    cpe:2.3:a:php:php:7.3.7
  • Php » Php » Version: 7.3.8
    cpe:2.3:a:php:php:7.3.8
  • Php » Php » Version: 7.3.9
    cpe:2.3:a:php:php:7.3.9
  • Php » Php » Version: 7.4.0
    cpe:2.3:a:php:php:7.4.0
  • Php » Php » Version: 7.4.1
    cpe:2.3:a:php:php:7.4.1
  • Php » Php » Version: 7.4.10
    cpe:2.3:a:php:php:7.4.10
  • Php » Php » Version: 7.4.11
    cpe:2.3:a:php:php:7.4.11
  • Php » Php » Version: 7.4.12
    cpe:2.3:a:php:php:7.4.12
  • Php » Php » Version: 7.4.13
    cpe:2.3:a:php:php:7.4.13
  • Php » Php » Version: 7.4.14
    cpe:2.3:a:php:php:7.4.14
  • Php » Php » Version: 7.4.15
    cpe:2.3:a:php:php:7.4.15
  • Php » Php » Version: 7.4.16
    cpe:2.3:a:php:php:7.4.16
  • Php » Php » Version: 7.4.17
    cpe:2.3:a:php:php:7.4.17
  • Php » Php » Version: 7.4.18
    cpe:2.3:a:php:php:7.4.18
  • Php » Php » Version: 7.4.19
    cpe:2.3:a:php:php:7.4.19
  • Php » Php » Version: 7.4.2
    cpe:2.3:a:php:php:7.4.2
  • Php » Php » Version: 7.4.20
    cpe:2.3:a:php:php:7.4.20
  • Php » Php » Version: 7.4.21
    cpe:2.3:a:php:php:7.4.21
  • Php » Php » Version: 7.4.22
    cpe:2.3:a:php:php:7.4.22
  • Php » Php » Version: 7.4.23
    cpe:2.3:a:php:php:7.4.23
  • Php » Php » Version: 7.4.24
    cpe:2.3:a:php:php:7.4.24
  • Php » Php » Version: 7.4.3
    cpe:2.3:a:php:php:7.4.3
  • Php » Php » Version: 7.4.4
    cpe:2.3:a:php:php:7.4.4
  • Php » Php » Version: 7.4.5
    cpe:2.3:a:php:php:7.4.5
  • Php » Php » Version: 7.4.6
    cpe:2.3:a:php:php:7.4.6
  • Php » Php » Version: 7.4.7
    cpe:2.3:a:php:php:7.4.7
  • Php » Php » Version: 7.4.8
    cpe:2.3:a:php:php:7.4.8
  • Php » Php » Version: 7.4.9
    cpe:2.3:a:php:php:7.4.9
  • Php » Php » Version: 8.0.0
    cpe:2.3:a:php:php:8.0.0
  • Php » Php » Version: 8.0.1
    cpe:2.3:a:php:php:8.0.1
  • Php » Php » Version: 8.0.10
    cpe:2.3:a:php:php:8.0.10
  • Php » Php » Version: 8.0.11
    cpe:2.3:a:php:php:8.0.11
  • Php » Php » Version: 8.0.2
    cpe:2.3:a:php:php:8.0.2
  • Php » Php » Version: 8.0.3
    cpe:2.3:a:php:php:8.0.3
  • Php » Php » Version: 8.0.4
    cpe:2.3:a:php:php:8.0.4
  • Php » Php » Version: 8.0.5
    cpe:2.3:a:php:php:8.0.5
  • Php » Php » Version: 8.0.6
    cpe:2.3:a:php:php:8.0.6
  • Php » Php » Version: 8.0.7
    cpe:2.3:a:php:php:8.0.7
  • Php » Php » Version: 8.0.8
    cpe:2.3:a:php:php:8.0.8
  • Php » Php » Version: 8.0.9
    cpe:2.3:a:php:php:8.0.9
  • Debian » Debian Linux » Version: 10.0
    cpe:2.3:o:debian:debian_linux:10.0
  • Debian » Debian Linux » Version: 11.0
    cpe:2.3:o:debian:debian_linux:11.0
  • Debian » Debian Linux » Version: 9.0
    cpe:2.3:o:debian:debian_linux:9.0
  • Fedoraproject » Fedora » Version: 33
    cpe:2.3:o:fedoraproject:fedora:33
  • Fedoraproject » Fedora » Version: 34
    cpe:2.3:o:fedoraproject:fedora:34
  • Fedoraproject » Fedora » Version: 35
    cpe:2.3:o:fedoraproject:fedora:35


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