SB2020091836 - Buffer overflow in Mongoose
Published: September 18, 2020 Updated: June 23, 2025
Security Bulletin ID
SB2020091836
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2020-25756)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
** DISPUTED ** A buffer overflow vulnerability exists in the mg_get_http_header function in Cesanta Mongoose 6.18 due to a lack of bounds checking. A crafted HTTP header can exploit this bug. NOTE: a committer has stated "this will not happen in practice."
Remediation
Install update from vendor's website.