Home/CVE/OpenSSL Information Disclosure Vulnerability
CVE

CVE-2014-0160

OpenSSL Information Disclosure Vulnerability

The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remote attackers to obtain sensitive information from process memory via crafted packets that trigger a buffer over-read, as demonstrated by reading private keys, related to d1_both.c and t1_lib.c, aka the Heartbleed bug.

HIGH · CVSS 7.5 ⚠ CISA KEV EPSS 0.94464
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules9 YARA rules0

Required Remediation

Apply updates per vendor instructions.

Weakness Classification

Detection Rules (IDS/IPS)

38
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.

Sigma Hunt Rules

9
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighEnable LM Hash Storage - ProcCreation
producthighProtected Storage Service Access
producthighEnable LM Hash Storage
productmediumGoogle Cloud Storage Buckets Modified or Deleted
productmediumESXi Storage Information Discovery Via ESXCLI
productmediumWrite Protect For Storage Disabled

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD07 Apr 2014 · 10:55 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

Vendor Advisories

27
suse-csafopenSUSE-SU-2024:10271-1
suse-csafopenSUSE-SU-2024:10289-1
suse-csafopenSUSE-SU-2024:10423-1
suse-csafopenSUSE-SU-2024:10528-1
suse-csafopenSUSE-SU-2024:10529-1
🔗

References & Sources

80
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://heartbleed.com/Third Party Advisory
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