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Fencer Vulns
medium 4.3

CVE-2019-10136 json

It was found that Spacewalk, all versions through 2.9, did not safely compute client token checksums.

published 2019-07-02 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-2176

cvss
4.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

It was found that Spacewalk, all versions through 2.9, did not safely compute client token checksums. An attacker with a valid, but expired, authenticated set of headers could move some digits around, artificially extending the session validity without modifying the checksum.

Patch / fix

  • spacewalk-backend network satellite 5.8 2.5.3-177.el6sat
  • spacewalk-backend-app network satellite 5.8 2.5.3-177.el6sat
  • spacewalk-backend-cdn network satellite 5.8 2.5.3-177.el6sat
  • spacewalk-backend-iss network satellite 5.8 2.5.3-177.el6sat
  • spacewalk-backend-sql network satellite 5.8 2.5.3-177.el6sat
  • spacewalk-backend-libs network satellite 5.8 2.5.3-177.el6sat
  • spacewalk-backend-tools network satellite 5.8 2.5.3-177.el6sat
  • spacewalk-backend-applet network satellite 5.8 2.5.3-177.el6sat

red hat advisories RHSA-2019:1661

  • rhnlib Manager Client Tools 15 4.0.11-3.10.1
  • mgr-cfg Manager Client Tools 15 4.0.9-1.6.5
  • mgr-osad Manager Client Tools 15, Manager Client Tools 12 4.0.9-1.6.2
  • spacecmd Manager Client Tools 15 4.0.14-3.26.1
  • mgr-daemon Manager Client Tools 15 4.0.7-1.8.1
  • spacewalk-backend Manager Client Tools 15 4.0.25-3.23.1
  • mgr-virtualization Manager Client Tools 15 4.0.8-1.8.4
  • spacewalk-remote-utils Manager Client Tools 15 4.0.5-3.9.2

suse advisories SUSE-SU-2019:2317-1SUSE-SU-2019:2312-1SUSE-SU-2019:14163-1SUSE-SU-2019:1790-1SUSE-SU-2019:1789-1

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-2019-10136 updated cvss 4.3

spacewalk: Insecure computation of authentication signatures during user authentication

  • Red Hat Satellite 5.8 (RHEL v.6) spacewalk-backend 2.5.3-177.el6sat, spacewalk-backend-app 2.5.3-177.el6sat, spacewalk-backend-cdn 2.5.3-177.el6sat, spacewalk-backend-iss 2.5.3-177.el6sat, spacewalk-backend-sql 2.5.3-177.el6sat, spacewalk-backend-libs 2.5.3-177.el6sat, +12 more
    fixed: vendor fix RHSA-2019:1661

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

0.56% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 4.3 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 3.0 4.3 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

  • spacewalkproject spacewalk

Classification

Weakness
  • CWE-347 Improper Verification of Cryptographic Signature

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.