CVE-2020-12059Network attack vector

Unauthenticated RGW crash via missing XML element

Published Apr 22, 2020 · Updated Aug 4, 2024

Denial of service in Ceph RGW through 13.2.9 allows remote attackers to crash the gateway process via malformed S3 tagging XML. RGWPostObj_ObjStore_S3::get_tags() dereferences the null result of parser.find_first("Tagging") while attempting to locate TagSet. Any network client that can reach an RGW S3 endpoint can trigger the process crash, interrupting gateway service without reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability2.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Ceph RGW through 13.2.9 allows remote attackers to crash the gateway process via malformed S3 tagging XML. RGWPostObj_ObjStore_S3::get_tags() dereferences the null result of parser.find_first("Tagging") while attempting to locate TagSet. Any network client that can reach an RGW S3 endpoint can trigger the process crash, interrupting gateway service without reported data disclosure or modification.

The record

CVE
CVE-2020-12059
Published
Apr 22, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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