PT-2023-6771 · Zavio · Zavio Cb3211+10

Attila Szasz + 1 · Published 2023-10-31 · Updated 2024-08-02 · CVE-2023-43755

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 Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 version M2.1.6.05

Description The issue is caused by stack-based overflows during the processing and parsing of certain fields in XML elements from incoming network requests. The product does not sufficiently check or validate allocated buffer size, which may lead to remote code execution. This can be exploited by a remote attacker to execute arbitrary code.

Recommendations For Zavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 version M2.1.6.05, update the firmware to a version that fixes the stack-based overflow vulnerability. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

BDU:2023-07579

CVE-2023-43755

Affected Products

Zavio B8220

Zavio B8520

Zavio Cb3211

Zavio Cb3212

Zavio Cb5220

Zavio Cb6231

Zavio Cd321

Zavio Cf7201

Zavio Cf7300

Zavio Cf7500

Zavio Cf7501

References · 8

• https://osv.dev/vulnerability/CVE-2023-43755 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-07579 · Security Note
• https://safe-surf.ru/upload/VULN-new/VULN.2023-11-01.1.pdf · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-43755 · Security Note
• https://cisa.gov/news-events/ics-advisories/icsa-23-304-03 · Note
• http://cisa.gov/news-events/ics-advisories/icsa-23-304-03 · Note
• https://twitter.com/VulmonFeeds/status/1722431833613246506 · Twitter Post
• https://twitter.com/CVEnew/status/1722392930772795445 · Twitter Post