Out-of-bounds Write Affecting apache2 package, versions <2.4.46-4ubuntu1.5


Severity

Recommended
medium

Based on Ubuntu security rating

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    10.15% (95th percentile)

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  • Snyk ID SNYK-UBUNTU2104-APACHE2-2322112
  • published 21 Dec 2021
  • disclosed 20 Dec 2021

How to fix?

Upgrade Ubuntu:21.04 apache2 to version 2.4.46-4ubuntu1.5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream apache2 package and not the apache2 package as distributed by Ubuntu. See How to fix? for Ubuntu:21.04 relevant fixed versions and status.

A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier.

References

CVSS Scores

version 3.1
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NVD

9.8 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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SUSE

9.8 critical
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Red Hat

9.8 critical