CyberSecBulletin
CVE-2022-46157NVD status: Modified

pim-community-dev: Improper Control of Generation of Code

Published Updated By the CyberSecBulletin desk

CVE-2022-46157 is a high-severity improper control of generation of code vulnerability in pim-community-dev from Akeneo, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected pim-community-dev versions: >= 6.0.0, < 6.0.53; < 5.0.119. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1.53% chance of exploitation within 30 days, higher than 75% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Product Information Management to 5.0.119 or 6.0.53, whichever matches your release line, or a later version.
  2. Read the advisory on github.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
Akeneopim-community-dev>= 6.0.0, < 6.0.53; < 5.0.119Not stated
AkeneoProduct Information Managementbefore 5.0.119; 6.0.0 up to, but not including, 6.0.535.0.119, 6.0.53

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.18.8HighCNA (github.com)
CVSS 3.18.8HighNVD

Official description

Akeneo PIM is an open source Product Information Management (PIM). Akeneo PIM Community Edition versions before v5.0.119 and v6.0.53 allows remote authenticated users to execute arbitrary PHP code on the server by uploading a crafted image. Akeneo PIM Community Edition after the versions aforementioned provides patched Apache HTTP server configuration file, for docker setup and in documentation sample, to fix this vulnerability. Community Edition users must change their Apache HTTP server configuration accordingly to be protected. The patch for Cloud Based Akeneo PIM Services customers has been applied since 30th October 2022. Users are advised to upgrade. Users unable to upgrade may Replace any reference to `<FilesMatch \.php$>` in their apache httpd configurations with: `<Location "/index.php">`.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Control of Generation of Code

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

How developers prevent this class of flaw

  • Refactor your program so that you do not have to dynamically generate code.
  • Run your code in a jail or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which code can be executed by your product. Examples include the Unix chroot jail and AppArmor. In general, managed code may provide some protection. This may not be a feasible solution, and it only limits the impact to the operating system; the rest of your application may still be subject to compromise. Be careful to avoid CWE-243 and other weaknesses related to jails.
  • Use dynamic tools and techniques that interact with the product using large test suites with many diverse inputs, such as fuzz testing (fuzzing), robustness testing, and fault injection. The product's operation may slow down, but it should not become unstable, crash, or generate incorrect results.

More Improper Control of Generation of Code vulnerabilities (CWE-94)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Technical write-ups (may include proof of concept)

Recent Improper Control of Generation of Code vulnerabilities

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