PT-2021-4789 · Cesanta · Mongoose Os

Published 2021-08-17 · Updated 2022-05-12 · CVE-2021-27425

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 Cesanta Software Mongoose-OS version 2.17.0

Description The issue is related to an integer wrap-around in the mm malloc function, leading to improper memory assignment. This can result in arbitrary memory allocation, causing unexpected behavior such as a crash or remote code injection/execution. The vulnerability can be exploited by a remote attacker to cause a denial of service or execute arbitrary code.

Recommendations For Cesanta Software Mongoose-OS version 2.17.0, consider disabling the mm malloc function as a temporary workaround until a patch is available. Restrict access to sensitive areas of the system to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

BDU:2021-05508

CVE-2021-27425

Affected Products

Mongoose Os

References · 9

• https://osv.dev/vulnerability/CVE-2021-27425 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27425 · Security Note
• https://bdu.fstec.ru/vul/2021-05508 · Security Note
• https://github.com/cesanta/mongoose-os · Note
• https://securitylab.ru/vulnerability/519553.php · Note
• https://cisa.gov/uscert/ics/advisories/icsa-21-119-04 · Note
• https://auscert.org.au/bulletins/ESB-2021.1489.2 · Note
• http://ics-cert.us-cert.gov/advisories/icsa-21-119-04 · Note
• https://cybersecurity-help.cz/vdb/SB2021043005 · Note