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Fencer Vulns
high 7.5

CVE-2019-3804 json

It was found that cockpit before version 184 used glib's base64 decode functionality incorrectly resulting in a denial of service attack.

published 2019-03-26 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-13430

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
4.9%
EPSS 4.9% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

It was found that cockpit before version 184 used glib's base64 decode functionality incorrectly resulting in a denial of service attack. An unauthenticated attacker could send a specially crafted request with an invalid base64-encoded cookie which could cause the web service to crash.

Patch / fix

  • cockpit-project cockpit 184
  • cockpit Debian 14, Debian 13, Debian 12 184-1

debian advisories DEBIAN-CVE-2019-3804

  • rhvm-appliance RHEL 7 2:4.3-20190605.0.el7
  • redhat-virtualization-host RHEL 7 4.3-20190610.0.el7_6
  • redhat-release-virtualization-host RHEL 7 4.3-0.8.el7
  • redhat-virtualization-host-image-update RHEL 7 4.3-20190610.0.el7_6
  • redhat-virtualization-host-image-update-placeholder RHEL 7 4.3-0.8.el7
  • cockpit RHEL 7 173.2-1.el7
  • cockpit-ws RHEL 7 173.2-1.el7
  • cockpit-bridge RHEL 7 173.2-1.el7

red hat advisories RHSA-2019:1571RHSA-2019:1569RHSA-2019:0482

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-2019-3804 updated cvss 7.5

cockpit: Crash when parsing invalid base64 headers

  • Red Hat Enterprise Linux Client (v. 7) cockpit 173.2-1.el7, cockpit-ws 173.2-1.el7, cockpit-bridge 173.2-1.el7, cockpit-system 173.2-1.el7 Red Hat Enterprise Linux Client Optional (v. 7) cockpit-machines-ovirt 173.2-1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) cockpit 173.2-1.el7, cockpit-ws 173.2-1.el7, cockpit-bridge 173.2-1.el7, cockpit-system 173.2-1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) cockpit-machines-ovirt 173.2-1.el7 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) cockpit 173.2-1.el7, cockpit-ws 173.2-1.el7, cockpit-bridge 173.2-1.el7, cockpit-system 173.2-1.el7 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) cockpit-machines-ovirt 173.2-1.el7
    +4 more products
    Red Hat Enterprise Linux Server (v. 7) cockpit 173.2-1.el7, cockpit-ws 173.2-1.el7, cockpit-bridge 173.2-1.el7, cockpit-system 173.2-1.el7 Red Hat Enterprise Linux Server Optional (v. 7) cockpit-machines-ovirt 173.2-1.el7 Red Hat Enterprise Linux Workstation (v. 7) cockpit 173.2-1.el7, cockpit-ws 173.2-1.el7, cockpit-bridge 173.2-1.el7, cockpit-system 173.2-1.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) cockpit-machines-ovirt 173.2-1.el7
    fixed: vendor fix RHSA-2019:0482
  • Red Hat Virtualization 4 Hypervisor for RHEL 7 rhvm-appliance 4.3-20190605.0.el7, redhat-virtualization-host 4.3-20190610.0.el7_6, redhat-virtualization-host-image-update 4.3-20190610.0.el7_6 Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts rhvm-appliance 4.3-20190605.0.el7
    fixed: vendor fix RHSA-2019:1571
  • Red Hat RHEL 7-based RHEV-H for RHEV 4 (build requirements) redhat-release-virtualization-host 4.3-0.8.el7, redhat-virtualization-host-image-update-placeholder 4.3-0.8.el7
    fixed: vendor fix RHSA-2019:1569
  • Red Hat Enterprise Linux 8 cockpit, cockpit-ws, cockpit-bridge, cockpit-system Red Hat OpenShift Container Platform 3.4 cockpit, cockpit-kubernetes Red Hat OpenShift Container Platform 3.5 cockpit, cockpit-kubernetes Red Hat OpenShift Container Platform 3.6 cockpit, cockpit-kubernetes Red Hat OpenShift Container Platform 3.7 cockpit, cockpit-kubernetes Red Hat OpenShift Container Platform 3.9 cockpit, cockpit-kubernetes
    +2 more products
    Red Hat OpenShift Container Platform 3.10 cockpit, cockpit-kubernetes Red Hat OpenShift Container Platform 3.11 cockpit, cockpit-kubernetes
    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

4.86% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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

  • [UNKNOWN] cockpit

Classification

Weakness
  • CWE-909 Missing Initialization of Resource

References

Sources

Fencer Vulns 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.