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NVD / CVE Program· CNA openssl

CVE-2019-1549: OpenSSL 1.1.1 introduced a rewritten random number generator (RNG).

Noroxi assessment

Priority: Monitor (action score 23/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 6.1% (FIRST EPSS); higher than 93.4% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: openssl (Alpine:v3.10) 1.1.1d-r0; openssl (Alpine:v3.11) 1.1.1d-r1; openssl3 (Alpine:v3.15) 1.1.1d-r1.
  • Mentioned 4 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to openssl (Alpine:v3.10) 1.1.1d-r0; openssl (Alpine:v3.11) 1.1.1d-r1; openssl3 (Alpine:v3.15) 1.1.1d-r1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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).

MediumCVSS 5.3 · v3.1—No exploit Fix available
Published
Sep 10, 2019
Updated
Jun 16, 2026
EPSS
6.1% · 93th percentile

Report tools

JSON

Action score

23

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 6.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
opensslopenssl

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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • openssl openssl1.1.1 and later · up to 1.1.1c inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (openssl). Independent of NVD's CPE analysis and usually ahead of it.

  • OpenSSL OpenSSL

    • Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.10opensslfrom 1.1.1 · before 1.1.1d-r01.1.1d-r0
Alpine:v3.11opensslfrom 1.1.1 · before 1.1.1d-r11.1.1d-r1
Alpine:v3.15openssl3before 1.1.1d-r11.1.1d-r1
Debian:12opensslbefore 1.1.1d-11.1.1d-1
Red Hat:enterprise_linux:8::baseosopensslbefore 1:1.1.1c-15.el81:1.1.1c-15.el8
Red Hat:enterprise_linux:8::baseosopenssl-debuginfobefore 1:1.1.1c-15.el81:1.1.1c-15.el8
Red Hat:enterprise_linux:8::baseosopenssl-debugsourcebefore 1:1.1.1c-15.el81:1.1.1c-15.el8
Red Hat:enterprise_linux:8::baseosopenssl-develbefore 1:1.1.1c-15.el81:1.1.1c-15.el8
Red Hat:enterprise_linux:8::baseosopenssl-libsbefore 1:1.1.1c-15.el81:1.1.1c-15.el8
Red Hat:enterprise_linux:8::baseosopenssl-libs-debuginfobefore 1:1.1.1c-15.el81:1.1.1c-15.el8
Red Hat:enterprise_linux:8::baseosopenssl-perlbefore 1:1.1.1c-15.el81:1.1.1c-15.el8
Red Hat:jboss_core_services:1::el6jbcs-httpd24-aprbefore 0:1.6.3-86.jbcs.el60:1.6.3-86.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-apr-debuginfobefore 0:1.6.3-86.jbcs.el60:1.6.3-86.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-apr-develbefore 0:1.6.3-86.jbcs.el60:1.6.3-86.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-brotlibefore 0:1.0.6-21.jbcs.el60:1.0.6-21.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-brotli-debuginfobefore 0:1.0.6-21.jbcs.el60:1.0.6-21.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-brotli-develbefore 0:1.0.6-21.jbcs.el60:1.0.6-21.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-httpdbefore 0:2.4.37-52.jbcs.el60:2.4.37-52.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-httpd-debuginfobefore 0:2.4.37-52.jbcs.el60:2.4.37-52.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-httpd-develbefore 0:2.4.37-52.jbcs.el60:2.4.37-52.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-httpd-manualbefore 0:2.4.37-52.jbcs.el60:2.4.37-52.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-httpd-selinuxbefore 0:2.4.37-52.jbcs.el60:2.4.37-52.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-httpd-toolsbefore 0:2.4.37-52.jbcs.el60:2.4.37-52.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-mod_cluster-nativebefore 0:1.3.12-41.Final_redhat_2.jbcs.el60:1.3.12-41.Final_redhat_2.jbcs.el6

+40

Same product

openssl: all records

Other highest-scoring records for the same primary product.

  • CVE-2014-0160The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remKEV
    90Now
  • CVE-2021-3711SM2 Decryption Buffer Overflow
    65This week
  • CVE-2003-0545Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code
    65This week

Published before and after this one in the same product

  • ← EarlierCVE-2019-1552Jul 30, 2019 · Windows builds with insecure path defaults
    13Monitor
  • ← EarlierCVE-2019-1547Sep 10, 2019 · ECDSA remote timing attack
    18Monitor
  • Later →CVE-2019-1563Sep 10, 2019 · Padding Oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
    15Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:openssl1.1.1d-r0 · Alpine:v3.10Package registry (OSV)
alpine:openssl31.1.1d-r1 · Alpine:v3.15Package registry (OSV)
debian:openssl1.1.1d-1 · Debian:12Package registry (OSV)
red hat:jbcs-httpd24-apr0:1.6.3-86.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-apr-debuginfo0:1.6.3-86.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-apr-devel0:1.6.3-86.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-brotli0:1.0.6-21.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-brotli-debuginfo0:1.0.6-21.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-brotli-devel0:1.0.6-21.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-httpd0:2.4.37-52.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-httpd-debuginfo0:2.4.37-52.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-httpd-devel0:2.4.37-52.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-httpd-manual0:2.4.37-52.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-httpd-selinux0:2.4.37-52.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
red hat:jbcs-httpd24-httpd-tools0:2.4.37-52.jbcs.el6 · Red Hat:jboss_core_services:1::el6Package registry (OSV)
suse:openssl-1_11.1.1d-2.20.1 · SUSE:Linux Enterprise Desktop 12 SP4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-330 · Use of Insufficiently Random Values

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (14 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records