CyberSecBulletin
CVE-2022-2006NVD status: Modified

C-more EA9: Uncontrolled Search Path Element

Published Updated By the CyberSecBulletin desk

CVE-2022-2006 is a high-severity uncontrolled search path element vulnerability in C-more EA9 from AutomationDirect, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists version 6.73 as the first without the flaw, so updating C-more EA9 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.36% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update C-more EA9 to 6.73 or a later version.
  2. Update C-more Ea9-t6cl Firmware to 6.73 or a later version.
  3. Update C-more Ea9-t6cl-r Firmware to 6.73 or a later version.
  4. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
AutomationDirectC-more EA9EA9-T6CL up to, but not including, 6.73; EA9-T6CL-R up to, but not including, 6.73; EA9-T7CL up to, but not including, 6.73; EA9-T7CL-R up to, but not including, 6.73; EA9-T8CL up to, but not including, 6.73; EA9-T10CL up to, but not including, 6.73; EA9-T10WCL up to, but not including, 6.73; EA9-T12CL up to, but not including, 6.73; and 3 more ranges6.73
AutomationdirectC-more Ea9-t6cl Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-t6cl-r Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-t7cl Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-t7cl-r Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-t8cl Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-t10cl Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-t10wcl Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-t12cl Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-t15cl Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-t15cl-r Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-rhmi Firmwarebefore 6.736.73
AutomationdirectC-more Ea9-pgmsw Firmwarebefore 6.736.73

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
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
RequiredA user must take an action such as opening a file or link.
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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.17.8HighCNA (hq.dhs.gov)
CVSS 3.17.8HighNVD

Official description

AutomationDirect DirectLOGIC has a DLL vulnerability in the install directory that may allow an attacker to execute code during the installation process. This issue affects: AutomationDirect C-more EA9 EA9-T6CL versions prior to 6.73; EA9-T6CL-R versions prior to 6.73; EA9-T7CL versions prior to 6.73; EA9-T7CL-R versions prior to 6.73; EA9-T8CL versions prior to 6.73; EA9-T10CL versions prior to 6.73; EA9-T10WCL versions prior to 6.73; EA9-T12CL versions prior to 6.73; EA9-T15CL versions prior to 6.73; EA9-RHMI versions prior to 6.73; EA9-PGMSW versions prior to 6.73;

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

The underlying weakness: Uncontrolled Search Path Element

The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors.

How developers prevent this class of flaw

  • Hard-code the search path to a set of known-safe values (such as system directories), or only allow them to be specified by the administrator in a configuration file. Do not allow these settings to be modified by an external party. Be careful to avoid related weaknesses such as CWE-426 and CWE-428.
  • When invoking other programs, specify those programs using fully-qualified pathnames. While this is an effective approach, code that uses fully-qualified pathnames might not be portable to other systems that do not use the same pathnames. The portability can be improved by locating the full-qualified paths in a centralized, easily-modifiable location within the source code, and having the code refer to these paths.
  • Remove or restrict all environment settings before invoking other programs. This includes the PATH environment variable, LD_LIBRARY_PATH, and other settings that identify the location of code libraries, and any application-specific search paths.

More Uncontrolled Search Path Element vulnerabilities (CWE-427)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Patches and release notes

Other vulnerabilities in C-more EA9

All C-more EA9 vulnerabilities

Recent Uncontrolled Search Path Element vulnerabilities

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