PT-2021-7516 · Lantronix+1 · Lantronix Premierwave 2050+1

Matt Wiseman · Published 2021-12-22 · Updated 2022-04-28 · CVE-2021-21887

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 Lantronix PremierWave 2050 version 8.9.0.0R4 Hirschmann BAT-C2 (affected versions not specified)

Description A stack-based buffer overflow issue exists in the Web Manager SslGenerateCSR functionality, allowing remote code execution through a specially crafted HTTP request. An attacker can trigger this issue by making an authenticated HTTP request.

Recommendations For Lantronix PremierWave 2050 version 8.9.0.0R4, consider disabling the SslGenerateCSR functionality until a patch is available. For Hirschmann BAT-C2, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

BDU:2022-07106

CVE-2021-21887

Affected Products

Hirschmann Bat-C2

Lantronix Premierwave 2050

References · 5

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1331 · Exploit
• https://bdu.fstec.ru/vul/2022-07106 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-21887 · Security Note
• https://osv.dev/vulnerability/CVE-2021-21887 · Vendor Advisory
• https://belden.com/dfsmedia/f1e38517e0cd4caa8b1acb6619890f5e/15087-source · Note