PT-2021-7545 · Hirschmann · Hirschmann Bat-C2

Matt Wiseman · Published 2021-12-22 · Updated 2022-12-22 · CVE-2021-21876

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Hirschmann BAT-C2 (affected versions not specified)

Description The issue exists due to the lack of measures to neutralize special elements used in the operating system command. This can be exploited by sending specially crafted HTTP requests, potentially allowing a remote attacker to execute arbitrary code. Specifically, specially-crafted HTTP requests can lead to arbitrary command execution in PUT requests. An attacker can make authenticated HTTP requests to trigger this issue.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

BDU:2022-07474

CVE-2021-21876

Affected Products

Hirschmann Bat-C2

References · 5

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1315 · Exploit
• https://osv.dev/vulnerability/CVE-2021-21876 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-07474 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-21876 · Security Note
• https://belden.com/dfsmedia/f1e38517e0cd4caa8b1acb6619890f5e/15087-source · Note