openssl: TLS ephemeral ECDH crashes in OpenSSL
Published Sep 22, 2011
5.0
MEDIUMCVSS 2.0
EPSS 4.56%
Description
The ephemeral ECDH ciphersuite functionality in OpenSSL 0.9.8 through 0.9.8r and 1.0.x before 1.0.0e does not ensure thread safety during processing of handshake messages from clients, which allows remote attackers to cause a denial of service (daemon crash) via out-of-order messages that violate the TLS protocol.
Affected products
No data.
Configuration 1
- 0.9.8
- 0.9.8a
- 0.9.8b
- 0.9.8c
- 0.9.8d
- 0.9.8e
- 0.9.8f
- 0.9.8g
- 0.9.8h
- 0.9.8i
- 0.9.8j
- 0.9.8k
- 0.9.8l
- 0.9.8m
- 0.9.8n
- 0.9.8o
- 0.9.8p
- 0.9.8q
- 0.9.8r
- 0.9.8s
Configuration 2
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0
- 1.0.0a
- 1.0.0b
- 1.0.0c
- 1.0.0d
No data.
Red Hat Enterprise Linux 4
openssl
Not affected
Red Hat Enterprise Linux 4
openssl096b
Not affected
Red Hat Enterprise Linux 5
openssl
Not affected
Red Hat Enterprise Linux 5
openssl097a
Not affected
Red Hat Enterprise Linux 6
openssl
Not affected
Red Hat Enterprise Linux 6
openssl098e
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 4 | openssl096b | Not affected | n/a |
| 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 | openssl | Not affected | n/a |
| Red Hat Enterprise Linux 6 | openssl098e | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of openssl as shipped with Red Hat Enterprise Linux 3, 4, 5, or 6, as they do not include the support for the elliptic curve cryptography.
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:N/A:P
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 (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.56% (0.04561) | 91.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.56% (0.04561) | 90.35th | v5 (v2026.06.15) |
| Dec 28, 2025 | 5.86% (0.05863) | 90.25th | v4 (v2025.03.14) |
| Dec 27, 2025 | 3.72% (0.03718) | 87.66th | v4 (v2025.03.14) |
| Dec 10, 2025 | 5.86% (0.05863) | 90.21th | v4 (v2025.03.14) |
| Oct 31, 2025 | 7.21% (0.07205) | 91.19th | v4 (v2025.03.14) |
| Oct 30, 2025 | 5.86% (0.05863) | 90.14th | v4 (v2025.03.14) |
| Oct 28, 2025 | 7.21% (0.07205) | 91.18th | v4 (v2025.03.14) |
| Oct 27, 2025 | 3.72% (0.03718) | 87.48th | v4 (v2025.03.14) |
| Oct 1, 2025 | 7.21% (0.07205) | 91.28th | v4 (v2025.03.14) |
| Jul 30, 2025 | 3.72% (0.03718) | 87.53th | v4 (v2025.03.14) |
| Mar 30, 2025 | 7.21% (0.07205) | 90.74th | v4 (v2025.03.14) |
| Mar 29, 2025 | 10.93% (0.10934) | 88.97th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.21% (0.07205) | 90.95th | v4 (v2025.03.14) |
| Dec 17, 2024 | 26.83% (0.26827) | 96.77th | v3 (v2023.03.01) |
| Mar 7, 2023 | 30.47% (0.30466) | 96.22th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.58% (0.06584) | 91.39th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.58% (0.06584) | 90.55th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.58% (0.06584) | 78.46th | v2 (v2022.01.01) |
References (14)
- http://cvs.openssl.org/chngview?cn=21337 x_refsource_CONFIRMPatch
- http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html vendor-advisoryx_refsource_APPLE
- http://marc.info/?l=bugtraq&m=132750648501816&w=2 vendor-advisoryx_refsource_HP
- http://marc.info/?l=bugtraq&m=133226187115472&w=2 vendor-advisoryx_refsource_HP
- http://openssl.org/news/secadv_20110906.txt x_refsource_CONFIRMVendor Advisory
- http://secunia.com/advisories/57353 third-party-advisoryx_refsource_SECUNIA
- http://support.apple.com/kb/HT5784 x_refsource_CONFIRM
- http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564 x_refsource_CONFIRM
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:137 vendor-advisoryx_refsource_MANDRIVA
- http://www.securitytracker.com/id?1026012 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2011-3210 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=736079 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-3210
- https://www.cve.org/CVERecord?id=CVE-2011-3210
Change history (0)
No recorded changes yet.