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Fencer Vulns
high 8.6

CVE-2020-1693 json

A flaw was found in Spacewalk up to version 2.9 where it was vulnerable to XML internal entity attacks via the /rpc/api endpoint.

published 2020-02-17 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-12553

cvss
8.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
4.3%
EPSS 4.3% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

A flaw was found in Spacewalk up to version 2.9 where it was vulnerable to XML internal entity attacks via the /rpc/api endpoint. An unauthenticated remote attacker could use this flaw to retrieve the content of certain files and trigger a denial of service, or in certain circumstances, execute arbitrary code on the Spacewalk server.

Patch / fix

  • redhat spacewalk 2.9
  • spacecmd Manager Server 3.2 2.8.25.14-3.32.1
  • susemanager Manager Server 3.2 3.2.23-3.40.2
  • spacewalk-web Manager Server 3.2 2.8.7.23-3.45.1
  • spacewalk-java Manager Server 3.2 2.8.78.28-3.47.1
  • redstone-xmlrpc Manager Server 3.2 1.1_20071120-0.11.3.1
  • spacewalk-admin Manager Server 3.2 2.8.4.6-3.12.1
  • spacewalk-setup Manager Server 3.2 2.8.7.10-3.25.1
  • spacewalk-utils Manager Server 3.2 2.8.18.6-3.12.1

suse advisories SUSE-SU-2020:0856-1SUSE-SU-2020:0671-1SUSE-RU-2020:0671-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-1693 updated cvss 6.5

spacewalk: XML entity attacks on /rpc/api

  • Red Hat Satellite 5 spacewalk
    affected: no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.27% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • zeroauth.ltd https://zeroauth.ltd/blog/2020/02/18/proof-of-concept-exploit-for-cve-2020-1693-spacewalk/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Red Hat spacewalk

Classification

Weakness
  • CWE-611 Improper Restriction of XML External Entity Reference

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.