Vulnerability Details : CVE-2021-26529
The mg_tls_init function in Cesanta Mongoose HTTPS server 7.0 and 6.7-6.18 (compiled with mbedTLS support) is vulnerable to remote OOB write attack via connection request after exhausting memory pool.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-26529
- cpe:2.3:a:cesanta:mongoose:*:*:*:*:*:*:*:*
- cpe:2.3:a:cesanta:mongoose:7.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-26529
1.45%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 85 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-26529
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.4
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:P |
10.0
|
4.9
|
NIST | |
|
9.1
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
3.9
|
5.2
|
NIST |
CWE ids for CVE-2021-26529
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-26529
-
https://github.com/cesanta/mongoose/issues/1203
Out-of-bounds write caused by incorrect error handling of calloc in mg_tls_init (mongoose.c:3297) · Issue #1203 · cesanta/mongoose · GitHubExploit;Third Party Advisory
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