CVE-2021-21702: Null Dereference in SoapClient
First published: Mon Feb 01 2021(Updated: )
Fixed bug (Null Dereference in SoapClient). (CVE-2021-21702)
Credit: security@php.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| <8.0.2 | 8.0.2 | |
| PHP PHP | >=7.3.0<7.3.27 | |
| PHP PHP | >=7.4.0<7.4.15 | |
| PHP PHP | >=8.0.0<8.0.2 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| NetApp Clustered Data ONTAP | ||
| Oracle Communications Diameter Signaling Router | >=8.0.0<=8.5.0 | |
| debian/php7.3 | 7.3.31-1~deb10u1 7.3.31-1~deb10u5 | |
| debian/php7.4 | 7.4.33-1+deb11u4 |
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Reference Links
- https://bugs.php.net/bug.php?id=80672
- https://lists.debian.org/debian-lts-announce/2021/07/msg00008.html
- https://security.gentoo.org/glsa/202105-23
- https://security.netapp.com/advisory/ntap-20210312-0005/
- https://www.debian.org/security/2021/dsa-4856
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.tenable.com/security/tns-2021-14
- https://www.php.net/ChangeLog-8.php#8.0.2 (Advisory)
- https://bugs.php.net/80672
- https://security-tracker.debian.org/tracker/CVE-2021-21702
Frequently Asked Questions
What is the vulnerability ID for this bug?
The vulnerability ID for this bug is CVE-2021-21702.
What is the title of this bug?
The title of this bug is 'Fixed bug (Null Dereference in SoapClient). (CVE-2021-21702)'
What is the description of this bug?
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.
What is the severity of CVE-2021-21702?
The severity of CVE-2021-21702 is high with a CVSS score of 7.5.
How can I fix CVE-2021-21702?
To fix CVE-2021-21702, update PHP to version 8.0.2 if you are using PHP 8.0.x, and update to the latest available versions if you are using PHP 7.3.x or 7.4.x.
Where can I find more information about CVE-2021-21702?
You can find more information about CVE-2021-21702 at the following references: [link1], [link2], [link3].
- collector/security-tracker-debian
- collector/nvd-index
- agent/type
- agent/softwarecombine
- agent/references
- agent/remedy
- agent/author
- agent/weakness
- collector/php-changelog
- source/PHP
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/title
- agent/last-modified-date
- agent/tags
- agent/severity
- agent/description
- agent/event
- agent/first-publish-date
- package-manager/debian
- vendor/php
- canonical/php php
- version/php php/7.3.0
- version/php php/7.4.0
- version/php php/8.0.0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- vendor/netapp
- canonical/netapp clustered data ontap
- vendor/oracle
- canonical/oracle communications diameter signaling router
- version/oracle communications diameter signaling router/8.0.0
- version/oracle communications diameter signaling router/8.5.0