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CVE-2019-3804

26
FAUCET Score

CVE-2019-3804 is a denial-of-service vulnerability affecting Cockpit versions prior to 184, including various Red Hat and Fedora products. An unauthenticated attacker can exploit this by sending a malformed base64-encoded cookie, causing the web service to crash. Rated 7.5 HIGH on CVSS, this vulnerability has a low attack complexity and requires no user interaction, leading to a high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 184CPE matchmatch criteria
cpe:2.3:a:cockpit-project:cockpit:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:-:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.86%
Probability of exploitation in next 30 days
EPSS Percentile
91.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0486 is in the 84th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: cockpit-0:173.2-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: redhat-release-virtualization-host-0:4.3-0.8.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: redhat-virtualization-host-0:4.3-20190610.0.el7_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: rhvm-appliance-0:4.3-20190605.0.el7
View patch

Vendor Advisories (1)

redhatCVE-2019-3804Moderate

cockpit: Crash when parsing invalid base64 headers

Dec 13, 2018

References

access.redhat.com / errata/RHSA-2019:1569
Third Party Advisory
access.redhat.com / errata/RHSA-2019:1571
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
github.com / cockpit-project/cockpit/commit/c51f6177576d7e12
PatchThird Party Advisory
github.com / cockpit-project/cockpit/pull/10819
Third Party Advisory