openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms
Published Feb 8, 2013
5.0
MEDIUMCVSS 2.0
EPSS 39.59%
Description
crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and 1.2 implementations in OpenSSL 1.0.1 before 1.0.1d allows remote attackers to cause a denial of service (application crash) via crafted CBC data.
Affected products
No data.
No data.
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 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 5 and 6 as they did not include support for TLS 1.2 or 1.1.
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 (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 39.59% (0.39593) | 98.57th | v5 (v2026.06.15) |
| Jun 15, 2026 | 39.59% (0.39593) | 98.43th | v5 (v2026.06.15) |
| Apr 23, 2026 | 63.14% (0.63145) | 98.41th | v4 (v2025.03.14) |
| Dec 28, 2025 | 66.12% (0.66117) | 98.45th | v4 (v2025.03.14) |
| Dec 27, 2025 | 64.99% (0.64989) | 98.41th | v4 (v2025.03.14) |
| Dec 7, 2025 | 66.12% (0.66117) | 98.43th | v4 (v2025.03.14) |
| Oct 28, 2025 | 55.98% (0.55985) | 97.97th | v4 (v2025.03.14) |
| Oct 27, 2025 | 54.66% (0.54656) | 97.91th | v4 (v2025.03.14) |
| Oct 1, 2025 | 55.98% (0.55985) | 98.04th | v4 (v2025.03.14) |
| Jul 30, 2025 | 54.66% (0.54656) | 97.92th | v4 (v2025.03.14) |
| Mar 30, 2025 | 55.98% (0.55985) | 97.89th | v4 (v2025.03.14) |
| Mar 29, 2025 | 72.07% (0.72070) | 98.34th | v4 (v2025.03.14) |
| Mar 25, 2025 | 55.98% (0.55985) | 97.90th | v4 (v2025.03.14) |
| Mar 17, 2025 | 59.80% (0.59796) | 98.05th | v4 (v2025.03.14) |
| Dec 12, 2024 | 18.33% (0.18334) | 96.38th | v3 (v2023.03.01) |
| Sep 8, 2024 | 18.33% (0.18334) | 96.29th | v3 (v2023.03.01) |
| Jul 6, 2024 | 13.83% (0.13826) | 95.70th | v3 (v2023.03.01) |
| Dec 30, 2023 | 18.33% (0.18334) | 95.72th | v3 (v2023.03.01) |
| Nov 8, 2023 | 19.46% (0.19462) | 95.76th | v3 (v2023.03.01) |
| Mar 7, 2023 | 12.78% (0.12780) | 94.54th | v3 (v2023.03.01) |
| Mar 6, 2023 | 62.62% (0.62622) | 98.97th | v2 (v2022.01.01) |
| Feb 4, 2022 | 62.62% (0.62622) | 98.72th | v2 (v2022.01.01) |
References (16)
- http://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=125093b59f3c2a2d33785b5563d929d0472f1721 x_refsource_CONFIRM
- http://lists.apple.com/archives/security-announce/2013/Sep/msg00002.html vendor-advisoryx_refsource_APPLE
- http://marc.info/?l=bugtraq&m=137545771702053&w=2 vendor-advisoryx_refsource_HP
- http://secunia.com/advisories/55108 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/55139 third-party-advisoryx_refsource_SECUNIA
- http://support.apple.com/kb/HT5880 x_refsource_CONFIRM
- http://www.openssl.org/news/secadv_20130204.txt x_refsource_CONFIRMVendor Advisory
- http://www.openssl.org/news/secadv_20130205.txt
- http://www.securityfocus.com/bid/57755 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2012-2686 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=908029 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2012-2686
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18868 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19660 vdb-entrysignaturex_refsource_OVAL
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c03883001 x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2012-2686
Change history (0)
No recorded changes yet.