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CVE-2023-5768

MEDIUMCVSS 6.1/10EPSS 0.41%

Last modified

CVE-2023-5768 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Incomplete or wrong received APDU frame layout may cause blocking on link layer. EPSS estimates a 0.41% chance of exploitation in the next 30 days.

Description

A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Incomplete or wrong received APDU frame layout may cause blocking on link layer. Error reason was an endless blocking when reading incoming frames on link layer with wrong length information of APDU or delayed reception of data octets. Only communication link of affected HCI IEC 60870-5-104 is blocked. If attack sequence stops the communication to the previously attacked link gets normal again.

Metrics

CVSS 3.1
6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability
0.41%

32.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
HitachienergyRtu520 Firmware>= 12.0.1, <= 12.0.14
HitachienergyRtu520 Firmware>= 12.2.1, <= 12.2.11
HitachienergyRtu520 Firmware>= 12.4.1, <= 12.4.11
HitachienergyRtu520 Firmware>= 12.6.1, <= 12.6.9
HitachienergyRtu520 Firmware>= 12.7.1, <= 12.7.6
HitachienergyRtu520 Firmware>= 13.2.1, <= 13.2.6
HitachienergyRtu520 Firmware>= 13.4.1, <= 13.4.3
HitachienergyRtu530 Firmware>= 12.0.1, <= 12.0.14
HitachienergyRtu530 Firmware>= 12.2.1, <= 12.2.11
HitachienergyRtu530 Firmware>= 12.4.1, <= 12.4.11
HitachienergyRtu530 Firmware>= 12.6.1, <= 12.6.9
HitachienergyRtu530 Firmware>= 12.7.1, <= 12.7.6
HitachienergyRtu530 Firmware>= 13.2.1, <= 13.2.6
HitachienergyRtu530 Firmware>= 13.4.1, <= 13.4.3
HitachienergyRtu540 Firmware>= 12.0.1, <= 12.0.14
HitachienergyRtu540 Firmware>= 12.2.1, <= 12.2.11
HitachienergyRtu540 Firmware>= 12.4.1, <= 12.4.11
HitachienergyRtu540 Firmware>= 12.6.1, <= 12.6.9
HitachienergyRtu540 Firmware>= 12.7.1, <= 12.7.6
HitachienergyRtu540 Firmware>= 13.2.1, <= 13.2.6
HitachienergyRtu540 Firmware>= 13.4.1, <= 13.4.3
HitachienergyRtu560 Firmware>= 12.0.1, <= 12.0.14
HitachienergyRtu560 Firmware>= 12.2.1, <= 12.2.11
HitachienergyRtu560 Firmware>= 12.4.1, <= 12.4.11
HitachienergyRtu560 Firmware>= 12.6.1, <= 12.6.9
HitachienergyRtu560 Firmware>= 12.7.1, <= 12.7.6
HitachienergyRtu560 Firmware>= 13.2.1, <= 13.2.6
HitachienergyRtu560 Firmware>= 13.4.1, <= 13.4.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-5768?
A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Incomplete or wrong received APDU frame layout may cause blocking on link layer. Error reason was an endless blocking when reading incoming frames on link layer with wrong length information of APDU or delayed reception of data octets. Only communication link of affected HCI IEC 60870-5-104 is blocked. If attack sequence stops the communication to the previously attacked link gets normal again.
How severe is CVE-2023-5768?
CVE-2023-5768 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.
How do I fix CVE-2023-5768?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-5768?

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Source: NVD / NIST