Out-of-bounds Write Affecting php-pecl-rrd package, versions <0:2.0.1-1.module+el8.3.0+7685+72d70b58


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.15% (53rd percentile)

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  • Snyk IDSNYK-ORACLE8-PHPPECLRRD-2832267
  • published18 May 2022
  • disclosed25 Oct 2021

Introduced: 25 Oct 2021

CVE-2021-21703  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:8 php-pecl-rrd to version 0:2.0.1-1.module+el8.3.0+7685+72d70b58 or higher.
This issue was patched in ELSA-2022-1935.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-pecl-rrd package and not the php-pecl-rrd package as distributed by Oracle. See How to fix? for Oracle:8 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.

CVSS Scores

version 3.1