Out-of-Bounds Affecting php-common package, versions <0:7.4.19-2.module+el8.6.0+13953+0a59ce9f


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.15% (52nd percentile)

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  • Snyk ID SNYK-CENTOS8-PHPCOMMON-1959975
  • published 22 Oct 2021
  • disclosed 20 Oct 2021

How to fix?

Upgrade Centos:8 php-common to version 0:7.4.19-2.module+el8.6.0+13953+0a59ce9f or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-common package and not the php-common package as distributed by Centos. See How to fix? for Centos: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
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NVD

7 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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Red Hat

6.4 medium
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SUSE

6.4 medium