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CVE-2011-1923· NVD / CVE Program· CNA redhat

The Diffie-Hellman key-exchange implementation in dhm.c in PolarSSL before 0.14.2 does not properly validate a public parameter, which makes

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.

MediumCVSS 4.0 · v2.0—No exploit No fix recorded
Published
Jun 20, 2012
Updated
Jun 16, 2026
EPSS
1.3% · 69th percentile
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Action score

16

Monitor

Low priority for now.

CVSS
16 / 40 · 4.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

Affected systems

VendorProduct
polarsslpolarssl

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • polarssl polarsslup to 0.14.0 inclusive
  • polarssl polarssl0.10.0
  • polarssl polarssl0.10.1
  • polarssl polarssl0.11.0
  • polarssl polarssl0.11.1
  • polarssl polarssl0.12.0
  • polarssl polarssl0.12.1
  • polarssl polarssl0.13.1

Same product

polarssl: all records

Other highest-scoring records for the same primary product.

  • CVE-2011-4574PolarSSL versions prior to v1.1 use the HAVEGE random number generation algorithm.
    39Monitor
  • CVE-2014-9744Memory leak in PolarSSL before 1.3.9 allows remote attackers to cause a denial of service (memory consumption) via a large number of ClientH
    32Monitor
  • CVE-2014-8628Memory leak in PolarSSL before 1.2.12 and 1.3.x before 1.3.9 allows remote attackers to cause a denial of service (memory consumption) via a
    32Monitor
  • CVE-2015-1182The asn1_get_sequence_of function in library/asn1parse.c in PolarSSL 1.0 through 1.2.12 and 1.3.x through 1.3.9 does not properly initialize
    31Monitor
  • CVE-2012-2130A Security Bypass vulnerability exists in PolarSSL 0.99pre4 through 1.1.1 due to a weak encryption error when generating Diffie-Hellman valu
    30Monitor
  • CVE-2015-8036Heap-based buffer overflow in ARM mbed TLS (formerly PolarSSL) 1.3.x before 1.3.14 and 2.x before 2.1.2 allows remote SSL servers to cause a
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
P · data can be read
Integrity
P · data or configuration can be modified
Availability
none
Attack complexity
High
Confidentiality impact
P
Integrity impact
P
Availability impact
None

Weakness class (CWE)

CWE-310 · Cryptographic Issues

CVSS vector

AV:N/AC:H/Au:N/C:P/I:P/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records