Vulnerability Details : CVE-2011-1923
The Diffie-Hellman key-exchange implementation in dhm.c in PolarSSL before 0.14.2 does not properly validate a public parameter, which makes it easier for man-in-the-middle attackers to obtain the shared secret key by modifying network traffic, a related issue to CVE-2011-5095.
Products affected by CVE-2011-1923
- cpe:2.3:a:polarssl:polarssl:*:*:*:*:*:*:*:*
- cpe:2.3:a:polarssl:polarssl:0.10.1:*:*:*:*:*:*:*
- cpe:2.3:a:polarssl:polarssl:0.10.0:*:*:*:*:*:*:*
- cpe:2.3:a:polarssl:polarssl:0.11.1:*:*:*:*:*:*:*
- cpe:2.3:a:polarssl:polarssl:0.11.0:*:*:*:*:*:*:*
- cpe:2.3:a:polarssl:polarssl:0.13.1:*:*:*:*:*:*:*
- cpe:2.3:a:polarssl:polarssl:0.12.1:*:*:*:*:*:*:*
- cpe:2.3:a:polarssl:polarssl:0.12.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2011-1923
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 35 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2011-1923
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:H/Au:N/C:P/I:P/A:N |
4.9
|
4.9
|
NIST |
CWE ids for CVE-2011-1923
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-1923
-
http://www.nessus.org/plugins/index.php?view=single&id=53360
SSL Server Accepts Weak Diffie-Hellman Keys | Tenable®
-
http://www.cl.cam.ac.uk/~rja14/Papers/psandqs.pdf
-
http://www.securityfocus.com/bid/46670
PolarSSL Diffie Hellman Key Exchange Security Bypass Vulnerability
-
http://polarssl.org/trac/wiki/SecurityAdvisory201101
PolarSSL Security Advisory 2011-01 - Tech Updates - Mbed TLS (Previously PolarSSL)Vendor Advisory
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