CVE-2020-15106

Improper Input Validation in etcd

MEDIUM

6.5

CVSS Score

Published: August 5, 2020 at 07:05 PM UTC

Updated: June 17, 2026 at 02:56 AM UTC

3 products affected across 3 vendorsFedoraEtcd:Etcd

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Severity

MEDIUM6.5

Exploit prediction

EPSS 1%

Description

In etcd before versions 3.3.23 and 3.4.10, a large slice causes panic in decodeRecord method. The size of a record is stored in the length field of a WAL file and no additional validation is done on this data. Therefore, it is possible to forge an extremely large frame size that can unintentionally panic at the expense of any RAFT participant trying to decode the WAL.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Etcd:· Etcd

95%

v < 3.3.233.4.0 ≤ v < 3.4.10

Affected range stops below 3.3.23, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.4.10, so it looks safe — our inference, not a vendor statement

Fedora · Fedora Projectrpm

95%

Etcd · Etcd Io

60%

v < 3.3.23v < 3.4.10

Affected range stops below 3.3.23, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.4.10, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP/

References (2)

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://github.com/etcd-io/etcd/security/advisories/GHSA-p4g4-wgrh-qrg2

Vendor Advisoryx_refsource_FEDORA

Source: [email protected]

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP/

CVSS

6.5MEDIUMGitHub_M

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-20NVD-CWE-Other

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