CyberSecBulletin
CVE-2022-29516NVD status: Modified

IPCOM EX2 series, IPCOM EX series, IPCOM VE2…: Improper Neutralization of Special Elements used in an OS Command

Published Updated By the CyberSecBulletin desk

CVE-2022-29516 is a critical-severity improper neutralization of special elements used in an OS command vulnerability in IPCOM EX2 series, IPCOM EX series, IPCOM VE2 series, and IPCOM VA2/VE1 series from Fujitsu, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 2.19% chance of exploitation within 30 days, higher than 83% of scored CVEs.

Patch this week

Critical severity: a successful attack would have severe impact.

What to do

  1. Update Ipcom Ex2 Nw 1100 Firmware to v01l05_nf0501 or a later version.
  2. Update Ipcom Ex2 Nw 3500 Firmware to v01l05_nf0501 or a later version.
  3. Update Ipcom Ex2 Nw 3200 Firmware to v01l05_nf0501 or a later version.
  4. Read the advisory on fujitsu.com for workarounds and exact fixed builds.
  5. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
FUJITSUIPCOM EX2 series, IPCOM EX series, IPCOM VE2 series, and IPCOM VA2/VE1 seriesNot specified in the recordNot stated
FujitsuIpcom Ex2 Nw 1100 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 Nw 3500 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 Nw 3200 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 Sc 1100 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 Sc 3500 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 Sc 3200 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 Lb 1100 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 Lb 3500 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 Lb 3200 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 In 1100 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 In 3200 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 In 3500 Firmwarebefore v01l05_nf0501v01l05_nf0501
FujitsuIpcom Ex2 Dc 3500 Firmwarebefore v02l21_nf0201v02l21_nf0201
FujitsuIpcom Ex2 Dc 3200 Firmwarebefore v02l21_nf0201v02l21_nf0201
FujitsuIpcom Ex In 2300 Firmwarebefore e20l33_nf1101e20l33_nf1101
FujitsuIpcom Ex In 2500 Firmwarebefore e20l33_nf1101e20l33_nf1101
FujitsuIpcom Ex In 2700 Firmwarebefore e20l33_nf1101e20l33_nf1101
FujitsuIpcom Ex Lb 1100 Firmwarebefore e20l33_nf1101e20l33_nf1101
FujitsuIpcom Ex Lb 1300 Firmwarebefore e20l33_nf1101e20l33_nf1101
FujitsuIpcom Ex Lb 2300 Firmwarebefore e20l33_nf1101e20l33_nf1101
FujitsuIpcom Ex Lb 2500 Firmwarebefore e20l33_nf1101e20l33_nf1101
FujitsuIpcom Ex Lb 2700 Firmwarebefore e20l33_nf1101e20l33_nf1101
FujitsuIpcom Ex Sc 1100 Firmwarebefore e20l33_nf1101e20l33_nf1101
FujitsuIpcom Ex Sc 1300 Firmwarebefore e20l33_nf1101e20l33_nf1101

Version data comes from the organisation that assigned the CVE; 22 further products are omitted here. 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
NoneNo account or login is needed.
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:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.19.8CriticalNVD
CVSS 2.010.0HighNVD

Official description

The web console of FUJITSU Network IPCOM series (IPCOM EX2 IN(3200, 3500), IPCOM EX2 LB(1100, 3200, 3500), IPCOM EX2 SC(1100, 3200, 3500), IPCOM EX2 NW(1100, 3200, 3500), IPCOM EX2 DC, IPCOM EX2 DC, IPCOM EX IN(2300, 2500, 2700), IPCOM EX LB(1100, 1300, 2300, 2500, 2700), IPCOM EX SC(1100, 1300, 2300, 2500, 2700), and IPCOM EX NW(1100, 1300, 2300, 2500, 2700)) allows a remote attacker to execute an arbitrary OS command via unspecified vectors.

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

The underlying weakness: Improper Neutralization of Special Elements used in an OS Command

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.

How developers prevent this class of flaw

  • If at all possible, use library calls rather than external processes to recreate the desired functionality.
  • For any data that will be used to generate a command to be executed, keep as much of that data out of external control as possible. For example, in web applications, this may require storing the data locally in the session's state instead of sending it out to the client in a hidden form field.
  • For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

More Improper Neutralization of Special Elements used in an OS Command vulnerabilities (CWE-78)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Third-party and government advisories

Recent Improper Neutralization of Special Elements used in an OS Command vulnerabilities

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