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Fencer Intel
high 7.5

CVE-2019-0190 in the critical feed json

A bug exists in the way mod_ssl handled client renegotiations.

published 7y ago modified 4mo ago also EUVD-2019-0994

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
59.9%
EPSS 59.9% chance of exploitation in 30 days, percentile 99.1%
public exploits
0
none known

Summary

A bug exists in the way mod_ssl handled client renegotiations. A remote attacker could send a carefully crafted request that would cause mod_ssl to enter a loop leading to a denial of service. This bug can be only triggered with Apache HTTP Server version 2.4.37 when using OpenSSL version 1.1.1 or later, due to an interaction in changes to handling of renegotiation attempts.

Patch / fix

  • apache2 Debian 14, Debian 13, Debian 12 2.4.38-1

debian advisories DEBIAN-CVE-2019-0190

  • apache2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +16 more 2.4.38-r0

alpine advisories ALPINE-CVE-2019-0190

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • apache Arch Linux 2.4.38-1

arch linux advisories AVG-857

Is CVE-2019-0190 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-0190 updated cvss 6.5

httpd: mod_ssl: infinite loop triggered by client-initiated renegotiation when using OpenSSL 1.1.1

  • Red Hat CloudForms Management Engine 5 httpd Red Hat Enterprise Linux 5 httpd Red Hat Enterprise Linux 6 httpd, mod_ssl, httpd-tools, httpd-manual Red Hat Enterprise Linux 7 httpd, mod_ssl, mod_ldap, httpd-tools, mod_session, httpd-manual, +1 more Red Hat Enterprise Linux 8 httpd, mod_md, mod_ssl, mod_ldap, mod_http2, httpd-tools, +4 more Red Hat JBoss Core Services jbcs-httpd24-httpd
    +6 more products
    Red Hat JBoss Enterprise Application Platform 5 httpd Red Hat JBoss Enterprise Application Platform 6 httpd, mod_ssl, mod_ldap, httpd-tools, httpd-manual Red Hat JBoss Enterprise Web Server 2 jbcs-httpd24, jbcs-httpd24-runtime Red Hat JBoss Web Server 3 httpd24 Red Hat Software Collections httpd24-httpd, httpd24-mod_md, httpd24-mod_ssl, httpd24-mod_ldap, httpd24-httpd-tools, httpd24-mod_session, +2 more Red Hat Virtualization 4 rhvm-appliance
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

59.94% chance of exploitation in the next 30 days, higher than 99.1% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • Apache Software Foundation Apache HTTP Server

Classification

Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.