Improper Input Validation Affecting etcd package, versions <3.3.25+dfsg-5


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.09% (37th percentile)

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  • Snyk ID SNYK-DEBIANUNSTABLE-ETCD-608028
  • published 21 Aug 2020
  • disclosed 5 Aug 2020

How to fix?

Upgrade Debian:unstable etcd to version 3.3.25+dfsg-5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream etcd package and not the etcd package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Scores

version 3.1
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NVD

6.5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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SUSE

5.3 medium
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Red Hat

6.5 medium