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CVE-2019-3833

31
FAUCET Score

CVE-2019-3833 is a denial-of-service vulnerability affecting Openwsman versions up to and including 2.6.9, as well as various Fedora and openSUSE distributions utilizing Openwsman. A remote, unauthenticated attacker can trigger an infinite loop in the process_connection() function by sending a specially crafted HTTP request. This vulnerability has a CVSS v3.1 score of 7.5 (High), indicating a network-based attack with low complexity and high impact on availability. There is no evidence of active exploitation, nor are there publicly available exploit modules like Metasploit or Nuclei, though it has received some community and media attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.9CPE matchmatch criteria
cpe:2.3:a:openwsman_project:openwsman:*:*:*:*:*:*:*:*
28CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
29CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*

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
15.24%
Probability of exploitation in next 30 days
EPSS Percentile
96.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.1524 is in the 95th 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

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 (12)

microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 2.6.8-13
microsoftpatch availablevia msrc
Product: azl3 openwsman 2.6.8-13 on Azure Linux 3.0Fixed in: 2.6.8-13
microsoftpatch availablevia msrc
Product: 17063-16823Fixed in: 2.6.8-13
microsoftpatch availablevia msrc
Product: 17064-16817Fixed in: 2.6.8-13
microsoftpatch availablevia msrc
Product: 17064-17084Fixed in: 2.6.8-13
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 2.6.8-13
microsoftpatch availablevia msrc
Product: cbl2 openwsman 2.6.8-13 on CBL Mariner 2.0Fixed in: 2.6.8-13
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: openwsman-0:2.6.5-7.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openwsman-0:2.6.3-7.git4391e5c.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openwsman
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty) DirectorFixed in: openwsman
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka) DirectorFixed in: openwsman

Vendor Advisories (5)

microsoft2024-Dec/CVE-2019-3833

CVE-2019-3833

Dec 10, 2024
microsoft2024-Nov/CVE-2019-3833

CVE-2019-3833

Nov 12, 2024
microsoft2024-Oct/CVE-2019-3833

CVE-2019-3833

Oct 8, 2024
microsoft2019-Mar/CVE-2019-3833Important

Openwsman versions up to and including 2.6.9 are vulnerable to infinite loop in process_connection() when parsing specially crafted HTTP requests. A remote unauthenticated attacker can exploit this vulnerability by sending malicious HTTP request to cause denial of service to openwsman server.

Mar 12, 2019
redhatCVE-2019-3833Moderate

openwsman: Infinite loop in process_connection() allows denial of service

Mar 12, 2019

References

bugzilla.suse.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-04/msg00006.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-04/msg00065.html
Mailing ListThird Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/2V5HJ355RSKMFQ7GRJAHRZNDVXASF7TA
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/B2HEZ7D7GF3HDF36JLGYXIK5URR66DS4
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/CXQP7UDPRZIZ4LM7FEJCTC2EDUYVOR2J
securityfocus.com / bid/107367
Third Party AdvisoryVDB Entry