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Fencer Intel
high 7.2

CVE-2019-10097 in the critical feed json

In Apache HTTP Server 2.4.32-2.4.39, when mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol…

published 7y ago modified 4mo ago also EUVD-2019-2141

cvss
7.2
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
52.9%
EPSS 52.9% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

In Apache HTTP Server 2.4.32-2.4.39, when mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY header could trigger a stack buffer overflow or NULL pointer deference. This vulnerability could only be triggered by a trusted proxy and not by untrusted HTTP clients.

Patch / fix

  • apache2 Debian 14, Debian 13, Debian 12 2.4.41-1

debian advisories DEBIAN-CVE-2019-10097

  • httpd RHEL 8 2.4.37-30.module+el8.3.0+7001+0766b9e7
  • mod_md RHEL 8 1:2.0.8-8.module+el8.3.0+6814+67d1e611
  • mod_ssl RHEL 8 1:2.4.37-30.module+el8.3.0+7001+0766b9e7
  • mod_ldap RHEL 8 2.4.37-30.module+el8.3.0+7001+0766b9e7
  • mod_http2 RHEL 8 1.15.7-2.module+el8.3.0+7670+8bf57d29
  • httpd-tools RHEL 8 2.4.37-30.module+el8.3.0+7001+0766b9e7
  • mod_session RHEL 8 2.4.37-30.module+el8.3.0+7001+0766b9e7
  • httpd-manual RHEL 8 2.4.37-30.module+el8.3.0+7001+0766b9e7

red hat advisories RHSA-2020:4751RHSA-2020:1337RHSA-2019:4126

  • apache2 SLE Module for Server Applications 15 SP1, SLE Module for Server Applications 15 2.4.33-3.21.1

suse advisories SUSE-SU-2019:2237-1

  • apache2 openSUSE Tumbleweed 2.4.49-1.1
  • apache2 openSUSE Leap 15.1, openSUSE Leap 15.0 2.4.33-lp151.8.6.1

opensuse advisories openSUSE-SU-2024:10623-1openSUSE-SU-2019:2051-1

  • mod_md AlmaLinux 8 1:2.0.8-8.module_el8.5.0+2609+b30d9eec
  • mod_md AlmaLinux 8 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa

almalinux advisories ALSA-2020:4751

  • mod_md Rocky Linux 8 1:2.0.8-8.module+el8.5.0+695+1fa8055e
  • mod_md Rocky Linux 8 1:2.0.8-8.module+el8.4.0+553+7a69454b

rocky linux advisories RLSA-2020:4751

  • apache2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +15 more 2.4.41-r0

alpine advisories ALPINE-CVE-2019-10097

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

Is CVE-2019-10097 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-2019-10097 updated cvss 6.6

httpd: null-pointer dereference in mod_remoteip

  • Red Hat JBoss Enterprise Web Server 2 jbcs-httpd24, httpd22 httpd22, jbcs-httpd24-runtime Red Hat JBoss Web Server 3 httpd24 httpd24
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP2
    fixed: vendor fix RHSA-2020:1336
  • Red Hat Enterprise Linux AppStream (v. 8) mod_md 2.0.8-8.module+el8.3.0+6814+67d1e611, httpd 2.4.37-30.module+el8.3.0+7001+0766b9e7, mod_ssl 2.4.37-30.module+el8.3.0+7001+0766b9e7, mod_http2 1.15.7-2.module+el8.3.0+7670+8bf57d29, mod_ldap 2.4.37-30.module+el8.3.0+7001+0766b9e7, httpd-tools 2.4.37-30.module+el8.3.0+7001+0766b9e7, +4 more
    fixed: vendor fix RHSA-2020:4751
  • Red Hat JBoss Core Services on RHEL 6 Server jbcs-httpd24-apr 1.6.3-86.jbcs.el6, jbcs-httpd24-brotli 1.0.6-21.jbcs.el6, jbcs-httpd24-httpd 2.4.37-52.jbcs.el6, jbcs-httpd24-mod_ssl 2.4.37-52.jbcs.el6, jbcs-httpd24-openssl 1.1.1c-16.jbcs.el6, jbcs-httpd24-mod_ldap 2.4.37-52.jbcs.el6, +9 more Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apr 1.6.3-86.jbcs.el7, jbcs-httpd24-brotli 1.0.6-21.jbcs.el7, jbcs-httpd24-httpd 2.4.37-52.jbcs.el7, jbcs-httpd24-mod_ssl 2.4.37-52.jbcs.el7, jbcs-httpd24-openssl 1.1.1c-16.jbcs.el7, jbcs-httpd24-mod_ldap 2.4.37-52.jbcs.el7, +9 more
    fixed: vendor fix RHSA-2020:1337
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) httpd24 1.1-19.el6, httpd24-build 1.1-19.el6, httpd24-runtime 1.1-19.el6, httpd24-httpd 2.4.34-15.el6, httpd24-nghttp2 1.7.1-8.el6, httpd24-scldevel 1.1-19.el6, +7 more Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) httpd24 1.1-19.el7, httpd24-runtime 1.1-19.el7, httpd24-httpd 2.4.34-15.el7, httpd24-nghttp2 1.7.1-8.el7, httpd24-scldevel 1.1-19.el7, httpd24-mod_md 2.4.34-15.el7, +7 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) httpd24 1.1-19.el7, httpd24-runtime 1.1-19.el7, httpd24-httpd 2.4.34-15.el7, httpd24-nghttp2 1.7.1-8.el7, httpd24-scldevel 1.1-19.el7, httpd24-mod_md 2.4.34-15.el7, +7 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) httpd24 1.1-19.el7, httpd24-runtime 1.1-19.el7, httpd24-httpd 2.4.34-15.el7, httpd24-nghttp2 1.7.1-8.el7, httpd24-scldevel 1.1-19.el7, httpd24-mod_md 2.4.34-15.el7, +7 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) httpd24 1.1-19.el7, httpd24-runtime 1.1-19.el7, httpd24-httpd 2.4.34-15.el7, httpd24-nghttp2 1.7.1-8.el7, httpd24-scldevel 1.1-19.el7, httpd24-mod_md 2.4.34-15.el7, +7 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) httpd24 1.1-19.el6, httpd24-build 1.1-19.el6, httpd24-runtime 1.1-19.el6, httpd24-httpd 2.4.34-15.el6, httpd24-nghttp2 1.7.1-8.el6, httpd24-scldevel 1.1-19.el6, +7 more
    +1 more products
    Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) httpd24 1.1-19.el7, httpd24-runtime 1.1-19.el7, httpd24-httpd 2.4.34-15.el7, httpd24-nghttp2 1.7.1-8.el7, httpd24-scldevel 1.1-19.el7, httpd24-mod_md 2.4.34-15.el7, +7 more
    fixed: vendor fix RHSA-2019:4126
  • 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
    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

52.87% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.0 AV:N/AC:M/Au:S/C:P/I:P/A:P

Affected products

  • n/a Apache HTTP Server

Classification

Weakness
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.