CVE-2021-21702

Null Dereference in SoapClient

At a glance

Severity: MEDIUM 5.3
EPSS: EPSS 3.15 % · percentile 88 (2026-10-27)
State: PUBLISHED
Published: 2021-02-15
Updated: 2024-09-16
Assigner: php
NVD status: Modified

Description

In PHP versions 7.3.x below 7.3.27, 7.4.x below 7.4.15 and 8.0.x below 8.0.2, when using SOAP extension to connect to a SOAP server, a malicious SOAP server could return malformed XML data as a response that would cause PHP to access a null pointer and thus cause a crash.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	php
CVSS 3.1	MEDIUM 5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	NVD · security@php.net (Secondary)
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)
CVSS 2.0	MEDIUM 5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-476

European references

ENISA EUVD · EUVD-2021-8874
GCVE · GCVE-0-2021-21702

CERT-FR advisories

CERTFR-2023-AVI-0537 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
CERTFR-2022-AVI-291 — Multiples vulnérabilités dans Zimbra · cert.ssi.gouv.fr
CERTFR-2021-AVI-571 — Multiples vulnérabilités dans Tenable · cert.ssi.gouv.fr
CERTFR-2021-AVI-084 — Multiples vulnérabilités dans PHP · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 7.3.0 < 7.3.27
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 7.4.0 < 7.4.15
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 8.0.0 < 8.0.2
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:* ≥ 8.0.0 ≤ 8.5.0

Affected products

Product	Versions
PHP Group · PHP	affected 7.3.x < 7.3.27 ; affected 7.4.x < 7.4.15 ; affected 8.0.X < 8.0.2

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD