CVE-2012-2333
Integer underflow in OpenSSL before 0.9.8x, 1.0.0 before 1.0.0j, and 1.0.1 before 1.0.1c, when TLS 1.1, TLS 1.2, or DTLS is used with CBC encryption, allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 27.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
Integer underflow in OpenSSL before 0.9.8x, 1.0.0 before 1.0.0j, and 1.0.1 before 1.0.1c, when TLS 1.1, TLS 1.2, or DTLS is used with CBC encryption, allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via a crafted TLS packet that is not properly handled during a certain explicit IV calculation.
- CVSS 2.0
- 6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
- EPSS
- 27.87% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-189
- Affected
- openssl/openssl · redhat/openssl
- Source
- secalert@redhat.com
EPSS 27.9% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://cvs.openssl.org/chngview?cn=22538
- http://cvs.openssl.org/chngview?cn=22547
- http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081460.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092905.html
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00019.html
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00020.html
- http://marc.info/?l=bugtraq&m=134919053717161&w=2
- http://marc.info/?l=bugtraq&m=136432043316835&w=2
- http://rhn.redhat.com/errata/RHSA-2012-0699.html
- http://rhn.redhat.com/errata/RHSA-2012-1306.html
- http://rhn.redhat.com/errata/RHSA-2012-1307.html
- http://rhn.redhat.com/errata/RHSA-2012-1308.html
- http://secunia.com/advisories/49116
- http://secunia.com/advisories/49208
- http://secunia.com/advisories/49324
- http://secunia.com/advisories/50768
- http://secunia.com/advisories/51312
- http://support.apple.com/kb/HT5784
- http://www.cert.fi/en/reports/2012/vulnerability641549.html
- http://www.debian.org/security/2012/dsa-2475
- http://www.kb.cert.org/vuls/id/737740US Government Resource
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:073
- http://www.openssl.org/news/secadv_20120510.txt
- http://www.securityfocus.com/bid/53476
- http://www.securitytracker.com/id?1027057
- https://bugzilla.redhat.com/show_bug.cgi?id=820686
- https://exchange.xforce.ibmcloud.com/vulnerabilities/75525
- http://cvs.openssl.org/chngview?cn=22538
- http://cvs.openssl.org/chngview?cn=22547
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.