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Vulnerability record · CVE-2019-0217 · published 8 April 2019

CVE-2019-0217: Apache http server race condition vulnerability

Apache · Http Server

In Apache HTTP Server 2.4 release 2.4.38 and prior, a race condition in mod_auth_digest when running in a threaded server could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions.

7.5 CVSS 3.1 High EPSS 17% · top 3.0% CWE-362 · Race condition
7.5CVSS 3.1 base score, v2 6.0
17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
78References
17 Jun 2026Last modified by NVD

Description

In Apache HTTP Server 2.4 release 2.4.38 and prior, a race condition in mod_auth_digest when running in a threaded server could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions.

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

Affected products

14 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00061.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00084.html Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2019/04/02/5 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/107668 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:2343 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3436 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3932 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3933 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3935 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:4126
https://bugzilla.redhat.com/show_bug.cgi?id=1695020 Issue TrackingThird Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.html Vendor Advisory
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%
https://lists.apache.org/thread.html/e0b8f6e858b1c8ec2ce8e291a2c543d438915037c7af661ab6d33808%40%3Cdev.httpd.apache.org%
https://lists.apache.org/thread.html/r03ee478b3dda3e381fd6189366fa7af97c980d2f602846eef935277d%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/rd2fb621142e7fa187cfe12d7137bf66e7234abcbbcd800074c84a538%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/re473305a65b4db888e3556e4dae10c2a04ee89dcff2e26ecdbd860a9%40%3Ccvs.httpd.apache.org
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org
https://lists.debian.org/debian-lts-announce/2019/04/msg00008.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ALIR5S3O7NRHEGFMIDMUSYQ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZRMTEIGZKYFNGIDOTXN3GN
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WETXNQWNQLWHV6XNW6YTO5U
https://seclists.org/bugtraq/2019/Apr/5 Issue TrackingMailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20190423-0001/ Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03950en_us Third Party Advisory
https://usn.ubuntu.com/3937-1/ Third Party Advisory
https://usn.ubuntu.com/3937-2/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4422 Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html PatchThird Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.html Mailing ListThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-0217), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.