openssl: ECDH downgrade bug fix
Published Jan 9, 2015
5.0
MEDIUMCVSS 2.0
EPSS 6.57%
Description
The ssl3_get_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct ECDHE-to-ECDH downgrade attacks and trigger a loss of forward secrecy by omitting the ServerKeyExchange message.
Affected products
No data.
- ≤ 0.9.8zc
- 1.0.0a
- 1.0.0b
- 1.0.0c
- 1.0.0d
- 1.0.0e
- 1.0.0f
- 1.0.0g
- 1.0.0h
- 1.0.0i
- 1.0.0j
- 1.0.0k
- 1.0.0l
- 1.0.0m
- 1.0.0n
- 1.0.0o
- 1.0.1a
- 1.0.1b
- 1.0.1c
- 1.0.1d
- 1.0.1e
- 1.0.1f
- 1.0.1g
- 1.0.1h
- 1.0.1i
- 1.0.1j
No data.
Red Hat Enterprise Linux 6
openssl-0:1.0.1e-30.el6_6.5
Fixed · RHSA-2015:0066
Red Hat Enterprise Linux 7
openssl-1:1.0.1e-34.el7_0.7
Fixed · RHSA-2015:0066
Red Hat Enterprise Linux 5
openssl
Not affected
Red Hat Enterprise Linux 5
openssl097a
Not affected
Red Hat Enterprise Linux 6
openssl098e
Not affected
Red Hat Enterprise Linux 7
openssl098e
Not affected
Red Hat JBoss Enterprise Application Platform 6
openssl
Not affected
Red Hat JBoss Enterprise Web Server 1
openssl
Not affected
Red Hat JBoss Enterprise Web Server 2
openssl
Not affected
Red Hat Storage 2
openssl
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | openssl-0:1.0.1e-30.el6_6.5 | Fixed | RHSA-2015:0066 |
| Red Hat Enterprise Linux 7 | openssl-1:1.0.1e-34.el7_0.7 | Fixed | RHSA-2015:0066 |
| Red Hat Enterprise Linux 5 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 5 | openssl097a | Not affected | n/a |
| Red Hat Enterprise Linux 6 | openssl098e | Not affected | n/a |
| Red Hat Enterprise Linux 7 | openssl098e | Not affected | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | openssl | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 1 | openssl | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 2 | openssl | Not affected | n/a |
| Red Hat Storage 2 | openssl | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the version of openssl and openssl097a as shipped with Red Hat Enterprise Linux 5. This issue does not affect the version of openssl098e as shipped with Red Hat Enterprise Linux 6 and 7.
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:L/Au:N/C:N/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 (48 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.57% (0.06574) | 93.62th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.57% (0.06574) | 92.94th | v5 (v2026.06.15) |
| Mar 30, 2026 | 8.85% (0.08845) | 92.50th | v4 (v2025.03.14) |
| Mar 28, 2026 | 6.10% (0.06102) | 90.73th | v4 (v2025.03.14) |
| Mar 7, 2026 | 11.18% (0.11175) | 93.36th | v4 (v2025.03.14) |
| Mar 4, 2026 | 7.79% (0.07788) | 91.81th | v4 (v2025.03.14) |
| Mar 1, 2026 | 3.40% (0.03403) | 87.24th | v4 (v2025.03.14) |
| Feb 4, 2026 | 6.80% (0.06803) | 91.10th | v4 (v2025.03.14) |
| Feb 1, 2026 | 3.35% (0.03354) | 87.07th | v4 (v2025.03.14) |
| Jan 4, 2026 | 6.80% (0.06803) | 91.03th | v4 (v2025.03.14) |
| Jan 1, 2026 | 3.35% (0.03354) | 87.02th | v4 (v2025.03.14) |
| Dec 28, 2025 | 6.80% (0.06803) | 91.01th | v4 (v2025.03.14) |
| Dec 27, 2025 | 4.61% (0.04613) | 88.96th | v4 (v2025.03.14) |
| Dec 4, 2025 | 7.40% (0.07397) | 91.36th | v4 (v2025.03.14) |
| Dec 1, 2025 | 3.39% (0.03391) | 87.03th | v4 (v2025.03.14) |
| Nov 4, 2025 | 7.30% (0.07300) | 91.25th | v4 (v2025.03.14) |
| Nov 1, 2025 | 3.55% (0.03555) | 87.25th | v4 (v2025.03.14) |
| Oct 28, 2025 | 7.30% (0.07300) | 91.24th | v4 (v2025.03.14) |
| Oct 27, 2025 | 4.96% (0.04961) | 89.20th | v4 (v2025.03.14) |
| Oct 4, 2025 | 7.30% (0.07300) | 91.29th | v4 (v2025.03.14) |
| Oct 1, 2025 | 3.55% (0.03555) | 87.27th | v4 (v2025.03.14) |
| Sep 5, 2025 | 4.96% (0.04961) | 89.25th | v4 (v2025.03.14) |
| Sep 1, 2025 | 2.14% (0.02137) | 83.60th | v4 (v2025.03.14) |
| Aug 4, 2025 | 4.96% (0.04961) | 89.26th | v4 (v2025.03.14) |
| Aug 1, 2025 | 2.14% (0.02137) | 83.58th | v4 (v2025.03.14) |
| Jul 30, 2025 | 4.96% (0.04961) | 89.25th | v4 (v2025.03.14) |
| Jul 4, 2025 | 7.30% (0.07300) | 91.21th | v4 (v2025.03.14) |
| Jul 1, 2025 | 3.55% (0.03555) | 87.27th | v4 (v2025.03.14) |
| Jun 4, 2025 | 7.30% (0.07300) | 91.17th | v4 (v2025.03.14) |
| Jun 1, 2025 | 3.55% (0.03555) | 87.19th | v4 (v2025.03.14) |
| May 4, 2025 | 7.30% (0.07300) | 91.14th | v4 (v2025.03.14) |
| May 1, 2025 | 3.55% (0.03555) | 87.10th | v4 (v2025.03.14) |
| Mar 30, 2025 | 6.89% (0.06895) | 90.50th | v4 (v2025.03.14) |
| Mar 29, 2025 | 13.95% (0.13948) | 90.54th | v4 (v2025.03.14) |
| Mar 21, 2025 | 6.89% (0.06895) | 90.60th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.39% (0.05387) | 89.40th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.58% (0.00585) | 78.88th | v3 (v2023.03.01) |
| May 3, 2024 | 0.57% (0.00567) | 77.67th | v3 (v2023.03.01) |
| Mar 26, 2024 | 4.68% (0.04681) | 92.44th | v3 (v2023.03.01) |
| Mar 25, 2024 | 0.57% (0.00567) | 77.34th | v3 (v2023.03.01) |
| Feb 2, 2024 | 0.70% (0.00699) | 78.24th | v3 (v2023.03.01) |
| Oct 29, 2023 | 0.63% (0.00627) | 76.64th | v3 (v2023.03.01) |
| Sep 15, 2023 | 0.89% (0.00887) | 80.66th | v3 (v2023.03.01) |
| Jun 23, 2023 | 1.03% (0.01029) | 81.76th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.88% (0.00880) | 80.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.72% (0.04720) | 89.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.72% (0.04720) | 88.14th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.72% (0.04720) | 74.52th | v2 (v2022.01.01) |
References (41)
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- http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html vendor-advisoryx_refsource_APPLE
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Change history (0)
No recorded changes yet.