CVE-2012-2686
CVE-2012-2686 is a medium-severity vulnerability in Openssl with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 40% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-310.
Key facts
- Severity: Medium (CVSS 2.0 base score 5.0)
- EPSS exploit prediction: 40% (98th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-310
- Affected product: Openssl
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2012-2686?
- 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.
- How severe is CVE-2012-2686?
- CVE-2012-2686 has a CVSS 2.0 base score of 5.0, rated medium severity.
- Is CVE-2012-2686 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 40% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2012-2686?
- CVE-2012-2686 primarily affects Openssl. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2012-2686?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2012-2686 published?
- CVE-2012-2686 was published on 2013-02-08 and last updated on 2026-06-16.
References
- http://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=125093b59f3c2a2d33785b5563d929d0472f1721
- http://lists.apple.com/archives/security-announce/2013/Sep/msg00002.html
- http://marc.info/?l=bugtraq&m=137545771702053&w=2
- http://secunia.com/advisories/55108
- http://secunia.com/advisories/55139
- http://support.apple.com/kb/HT5880
- http://www.openssl.org/news/secadv_20130204.txt
- http://www.securityfocus.com/bid/57755
- https://bugzilla.redhat.com/show_bug.cgi?id=908029
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18868
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19660
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c03883001
Affected products (4)
- cpe:2.3:a:openssl:openssl:1.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.1a:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.1b:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.1c:*:*:*:*:*:*:*
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