Out-of-bounds Write Affecting php7-zlib package, versions <7.4.33-150200.3.46.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating

    Threat Intelligence

    EPSS
    0.15% (52nd percentile)

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  • Snyk ID SNYK-SLES153-PHP7ZLIB-3129455
  • published 19 Nov 2022
  • disclosed 18 Nov 2022

How to fix?

Upgrade SLES:15.3 php7-zlib to version 7.4.33-150200.3.46.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php7-zlib package and not the php7-zlib package as distributed by SLES. See How to fix? for SLES:15.3 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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SUSE

6.4 medium
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Red Hat

6.4 medium