CVE-2019-1549
mediumpriority · track · 23OT risk · elevatedEPSS 0.062 · 93 %ileDEEURUUSEPSS · scored 2026-10-23
OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedAPM Edgecisa_csaf_ot
Hitachi Energy recommends users update to Transformer APM Edge v4.0. This version updates the software components to remediate this vulnerability.
- MitigationAPM Edgecisa_csaf_ot
Do not directly connect to the Internet.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (87)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2023-1049Oracle MySQL: Mehrere SchwachstellenDeutsch2020-04-14csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle MySQL ausnutzen, um die Verfügbarkeit, Vertraulichkeit und Integrität zu gefährden.
- WID-SEC-W-2023-1762OpenSSL: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2019-09-10csaf · cert_bundDE
Ein entfernter Angreifer kann eine Schwachstelle in OpenSSL ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
- ICSA-21-336-06Hitachi Energy APM Edge2021-12-02icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could cause the product to become inaccessible.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (101)
External citations — patches, advisories, analysis.
- http://www.vuxml.org/freebsd/9e0c6f7a-d46d-11e9-a1c7-b499baebfeaf.htmlcnnvd
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1becnnvd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/cnnvd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-1549cnnvd
- https://packetstormsecurity.com/files/154455/OpenSSL-Toolkit-1.1.1d.htmlcnnvd
- https://packetstormsecurity.com/files/154709/Debian-Security-Advisory-4539-1.htmlcnnvd
- https://packetstormsecurity.com/files/157128/Red-Hat-Security-Advisory-2020-1337-01.htmlcnnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan