PT-2021-7783 · Dc.Exe · Dc.Exe

Published 2021-10-12 · Updated 2022-02-18 · CVE-2021-22802

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Interactive Graphical SCADA System Data Collector (dc.exe) versions 15.0.0.21243 and prior

Description A buffer copy without checking the size of input vulnerability exists, which could result in remote code execution due to a missing length check on user-supplied data when a constructed message is received on the network. This issue is caused by a buffer overflow on the stack. The exploitation of this vulnerability may allow a remote attacker to execute arbitrary code.

Recommendations For versions 15.0.0.21243 and prior, consider disabling the reception of constructed messages on the network until a patch is available. Restrict access to the dc.exe component to minimize the risk of exploitation. Avoid using user-supplied data without proper length checks in the affected system. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

BDU:2023-02898

CVE-2021-22802

ZDI-21-1152

Affected Products

Dc.Exe

References · 6

• https://bdu.fstec.ru/vul/2023-02898 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-22802 · Security Note
• https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-285-03 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-22802 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-1152 · Security Note
• https://t.me/cibsecurity/37321 · Telegram Post