In Ceph before 12.2.3 and 13.x through 13.0.1, the rgw_civetweb.cc RGWCivetWeb::init_env function in radosgw doesn't handle malformed HTTP h
In Ceph before 12.2.3 and 13.x through 13.0.1, the rgw_civetweb.cc RGWCivetWeb::init_env function in radosgw doesn't handle malformed HTTP headers properly, allowing for denial of service.
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 help- Published
- Mar 19, 2018
- Updated
- Jun 16, 2026
- EPSS
- 2.9% · 86th percentile
- CWE
- CWE-476
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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 · 2.9%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| redhat | ceph | cpe:2.3:a:redhat:ceph |
| 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.
- fedoraproject fedora27
- redhat cephbefore 12.2.3
- redhat ceph13.0.0
- redhat ceph13.0.1
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Red Hat:ceph_storage:3::el7 | ceph | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-base | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-common | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-debuginfo | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-fuse | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-mds | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-mgr | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-mon | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-osd | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-radosgw | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-selinux | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | ceph-test | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | libcephfs-devel | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | libcephfs2 | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | librados-devel | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | librados2 | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | libradosstriper1 | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | librbd-devel | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | librbd1 | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | librgw-devel | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | librgw2 | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | python-cephfs | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | python-rados | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
| Red Hat:ceph_storage:3::el7 | python-rbd | before 2:12.2.1-46.el7cp | 2:12.2.1-46.el7cp |
+6
Same product
redhat: all recordsOther highest-scoring records for the same primary product.
- CVE-2020-25660A flaw was found in the Cephx authentication protocol in versions before 15.2.6 and before 14.2.14, where it does not verify Ceph clients co35Monitor
- CVE-2022-3650A privilege escalation flaw was found in Ceph.31Monitor
- CVE-2024-47866RGW DoS attack with empty HTTP header in S3 object copy30Monitor
- CVE-2018-16889Ceph does not properly sanitize encryption keys in debug logging for v4 auth.30Monitor
- CVE-2020-27781User credentials can be manipulated and stolen by Native CephFS consumers of OpenStack Manila, resulting in potential privilege escalation.28Monitor
- CVE-2018-16846It was found in Ceph versions before 13.2.4 that authenticated ceph RGW users can cause a denial of service against OMAPs holding bucket ind27Monitor
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 |
|---|---|---|
| red hat:ceph | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:ceph-base | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:ceph-common | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:ceph-debuginfo | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:ceph-mgr | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:ceph-mon | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:ceph-selinux | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:ceph-test | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:libcephfs-devel | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:libcephfs2 | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:librados-devel | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| red hat:librados2 | 2:12.2.1-46.el7cp · Red Hat:ceph_storage:3::el7 | Package registry (OSV) |
| suse:ceph | 12.2.5+git.1524775272.5e7ea8cf03-2.7.1 · SUSE:Linux Enterprise Desktop 12 SP3 | Package registry (OSV) |
| suse:ceph-test | 10.2.11+git.1531487710.3a12911a2e-12.14.2 · SUSE:Enterprise Storage 4 | 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
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-476 · NULL Pointer DereferenceCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
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
- tracker.ceph.com/issues/23039
- access.redhat.com/errata/RHSA-2018:0546
- access.redhat.com/errata/RHSA-2018:0548
- bugzilla.redhat.com/show_bug.cgi?id=1546611
- github.com/ceph/ceph/pull/20488
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/74VI6EPZ6LD2O4JJXJBTYQ4U4VUO2ZDO/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.