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…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)04 May 2022
- Exploited in EUVD (ENISA)04 May 2022
- Used by ransomwareno
- EPSS above 10 %100.00%
- No account, over the networkyes
What to do
Fix
Update to a fixed version: 1.0.1g-1
CISA guidance: Apply updates per vendor instructions.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
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.
Affected products
Open source packages OSV
- opensslDebian:11 · CVE-2014-0160fixed in 1.0.1g-1
- opensslDebian:12 · CVE-2014-0160fixed in 1.0.1g-1
- opensslDebian:13 · CVE-2014-0160fixed in 1.0.1g-1
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
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EPSS peak: 100.00%