A use-after-free flaw was found in pacemaker up to and including version 2.0.1 which could result in certain sensitive information to be lea
A use-after-free flaw was found in pacemaker up to and including version 2.0.1 which could result in certain sensitive information to be leaked via the system logs.
- Published
- Apr 18, 2019
- Updated
- Jun 16, 2026
- EPSS
- 1.9% · 79th percentile
- CWE
- CWE-416
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.9%
CNA vs NVD score
- NVD
- 7.5
- CNA · redhat
- 3.3
- 4.2 point gap
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| clusterlabs | pacemaker | cpe:2.3:a:clusterlabs:pacemaker |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux16.04
- canonical ubuntu linux18.04
- canonical ubuntu linux18.10
- canonical ubuntu linux19.04
- clusterlabs pacemakerup to 2.0.1 inclusive
- fedoraproject fedora30
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
ClusterLabs pacemaker
- affects up to and including version 2.0.1affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | pacemaker | before 2.0.1-3 | 2.0.1-3 |
| openSUSE:Leap 15.0 | pacemaker | before 1.1.18+20180430.b12c320f5-lp150.2.9.1 | 1.1.18+20180430.b12c320f5-lp150.2.9.1 |
| Red Hat:enterprise_linux:7::server | pacemaker | before 0:1.1.19-8.el7_6.5 | 0:1.1.19-8.el7_6.5 |
| Red Hat:enterprise_linux:7::server | pacemaker-cli | before 0:1.1.19-8.el7_6.5 | 0:1.1.19-8.el7_6.5 |
| Red Hat:enterprise_linux:7::server | pacemaker-cluster-libs | before 0:1.1.19-8.el7_6.5 | 0:1.1.19-8.el7_6.5 |
| Red Hat:enterprise_linux:7::server | pacemaker-cts | before 0:1.1.19-8.el7_6.5 | 0:1.1.19-8.el7_6.5 |
| Red Hat:enterprise_linux:7::server | pacemaker-debuginfo | before 0:1.1.19-8.el7_6.5 | 0:1.1.19-8.el7_6.5 |
| Red Hat:enterprise_linux:7::server | pacemaker-doc | before 0:1.1.19-8.el7_6.5 | 0:1.1.19-8.el7_6.5 |
| Red Hat:enterprise_linux:7::server | pacemaker-libs | before 0:1.1.19-8.el7_6.5 | 0:1.1.19-8.el7_6.5 |
| Red Hat:enterprise_linux:7::server | pacemaker-libs-devel | before 0:1.1.19-8.el7_6.5 | 0:1.1.19-8.el7_6.5 |
| Red Hat:enterprise_linux:7::server | pacemaker-nagios-plugins-metadata | before 0:1.1.19-8.el7_6.5 | 0:1.1.19-8.el7_6.5 |
| Red Hat:enterprise_linux:7::server | pacemaker-remote | before 0:1.1.19-8.el7_6.5 | 0:1.1.19-8.el7_6.5 |
| Red Hat:enterprise_linux:8::appstream | pacemaker | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::appstream | pacemaker-cli-debuginfo | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::appstream | pacemaker-cluster-libs | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::appstream | pacemaker-cluster-libs-debuginfo | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::appstream | pacemaker-debuginfo | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::appstream | pacemaker-debugsource | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::appstream | pacemaker-libs | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::appstream | pacemaker-libs-debuginfo | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::appstream | pacemaker-remote-debuginfo | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::appstream | pacemaker-schemas | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::highavailability | pacemaker-cli | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
| Red Hat:enterprise_linux:8::highavailability | pacemaker-cts | before 0:2.0.1-4.el8_0.3 | 0:2.0.1-4.el8_0.3 |
+6
Same product
clusterlabs: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-16877A flaw was found in the way pacemaker's client-server authentication was implemented in versions up to and including 2.0.0.31Monitor
- CVE-2016-7035An authorization flaw was found in Pacemaker before 1.1.16, where it did not properly guard its IPC interface.31Monitor
- CVE-2016-7797Pacemaker before 1.1.15, when using pacemaker remote, might allow remote attackers to cause a denial of service (node disconnection) via an 31Monitor
- CVE-2020-25654An ACL bypass flaw was found in pacemaker.29Monitor
- CVE-2011-5271Pacemaker before 1.1.6 configure script creates temporary files insecurely22Monitor
- CVE-2018-16878A flaw was found in pacemaker up to and including version 2.0.1.22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:pacemaker | 2.0.1-3 · Debian:12 | Package registry (OSV) |
| opensuse:pacemaker | 1.1.18+20180430.b12c320f5-lp150.2.9.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| red hat:pacemaker | 0:1.1.19-8.el7_6.5 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-cli | 0:1.1.19-8.el7_6.5 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-cli-debuginfo | 0:2.0.1-4.el8_0.3 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:pacemaker-cluster-libs | 0:1.1.19-8.el7_6.5 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-cluster-libs-debuginfo | 0:2.0.1-4.el8_0.3 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:pacemaker-cts | 0:1.1.19-8.el7_6.5 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-debuginfo | 0:1.1.19-8.el7_6.5 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-doc | 0:1.1.19-8.el7_6.5 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-libs | 0:1.1.19-8.el7_6.5 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-libs-devel | 0:1.1.19-8.el7_6.5 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-nagios-plugins-metadata | 0:1.1.19-8.el7_6.5 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:pacemaker-remote | 0:1.1.19-8.el7_6.5 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| suse:pacemaker | 1.1.19+20181105.ccd6b5b10-3.10.1 · SUSE:Linux Enterprise High Availability Extension 12 SP4 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-416 · Use After FreeCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Root cause
After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.
The bug in code
The whole CWE-416 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
free(dev->buf);/* ... another thread is still running ... */process(dev->buf);Fixed
lock(&dev->lock);free(dev->buf);dev->buf = NULL;unlock(&dev->lock);Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-security-announce/2019-05/msg00034.html
- www.securityfocus.com/bid/108036
- access.redhat.com/errata/RHSA-2019:1278
- access.redhat.com/errata/RHSA-2019:1279
- bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3885
- github.com/ClusterLabs/pacemaker/pull/1749
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GCWFO7GL6MBU6C4BGFO3P6L77DIBBF3/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FY4M4RMIG2POKC6OOFQODGKPRYXHET2F/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HR6QUYGML735EI3HEEHYRDW7EG73BUH2/
- security.gentoo.org/glsa/202309-09
- usn.ubuntu.com/3952-1/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.