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CVE-2021-43174

Published: 9 November 2021

NLnet Labs Routinator versions 0.9.0 up to and including 0.10.1, support the gzip transfer encoding when querying RRDP repositories. This encoding can be used by an RRDP repository to cause an out-of-memory crash in these versions of Routinator. RRDP uses XML which allows arbitrary amounts of white space in the encoded data. The gzip scheme compresses such white space extremely well, leading to very small compressed files that become huge when being decompressed for further processing, big enough that Routinator runs out of memory when parsing input data waiting for the next XML element.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
cfrpki
Launchpad, Ubuntu, Debian
jammy Not vulnerable
(1.4.2-1)
trusty Ignored
(end of standard support)
upstream
Released (1.4.0-1)
xenial Ignored
(end of standard support)
impish Ignored
(end of life)
routinator
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
upstream Needs triage

xenial Ignored
(end of standard support)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H