Out-of-bounds Write Affecting php7-wddx package, versions <7.2.5-4.89.4
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Test your applications- Snyk ID SNYK-SLES150-PHP7WDDX-2647517
- published 14 Apr 2022
- disclosed 2 Mar 2022
Introduced: 2 Mar 2022
CVE-2021-21703 Open this link in a new tabHow to fix?
Upgrade SLES:15.0 php7-wddx to version 7.2.5-4.89.4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream php7-wddx package and not the php7-wddx package as distributed by SLES.
See How to fix? for SLES:15.0 relevant fixed versions and status.
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.
References
- https://www.suse.com/security/cve/CVE-2021-21703.html
- https://bugzilla.suse.com/1192050
- https://bugs.php.net/bug.php?id=81026
- https://www.debian.org/security/2021/dsa-4993
- https://www.debian.org/security/2021/dsa-4992
- http://www.openwall.com/lists/oss-security/2021/10/26/7
- https://lists.debian.org/debian-lts-announce/2021/10/msg00021.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PBM3KKB3RY2YPOKNMC4HIH7IH3T3WC74/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JO5RA6YOBGGGKLIA6F6BQRZDDECF5L3R/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6PZVLICZUJMXOGWOUWSBAEGIVTF6Y6V3/
- https://security.netapp.com/advisory/ntap-20211118-0003/
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://security.gentoo.org/glsa/202209-20
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6PZVLICZUJMXOGWOUWSBAEGIVTF6Y6V3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JO5RA6YOBGGGKLIA6F6BQRZDDECF5L3R/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PBM3KKB3RY2YPOKNMC4HIH7IH3T3WC74/