openssl: weak public value accepted during Diffie Hellman key exchange
Published Jun 20, 2012
4.0
MEDIUMCVSS 2.0
EPSS 2.09%
Description
The Diffie-Hellman key-exchange implementation in OpenSSL 0.9.8, when FIPS mode is enabled, 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-2011-1923.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
openssl
Not affected
Red Hat Enterprise Linux 5
openssl097a
Will not fix
Red Hat Enterprise Linux 6
openssl
Not affected
Red Hat Enterprise Linux 6
openssl098e
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 5 | openssl097a | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 6 | openssl098e | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue was addressed in Red Hat Enterprise Linux 5 openssl packages via RHBA-2011:1010, bug 698175. It did not affect openssl packages shipped with Red Hat Enterprise Linux 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:H/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.09% (0.02088) | 80.90th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.09% (0.02088) | 79.08th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.18% (0.00180) | 37.25th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00073) | 33.83th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.08% (0.00077) | 32.21th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00073) | 29.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
References (7)
- http://www.cl.cam.ac.uk/~rja14/Papers/psandqs.pdf x_refsource_MISC
- http://www.nessus.org/plugins/index.php?view=single&id=53360 x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2011-5095 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=834062 Issue Tracking
- https://discussions.nessus.org/thread/3381 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2011-5095
- https://www.cve.org/CVERecord?id=CVE-2011-5095
| Link | Providers | Tags |
|---|---|---|
| http://www.cl.cam.ac.uk/~rja14/Papers/psandqs.pdf | x_refsource_MISC | |
| http://www.nessus.org/plugins/index.php?view=single&id=53360 | x_refsource_MISC | |
| https://access.redhat.com/security/cve/CVE-2011-5095 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=834062 | Issue Tracking | |
| https://discussions.nessus.org/thread/3381 | x_refsource_MISC | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-5095 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-5095 |
Change history (0)
No recorded changes yet.