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TI-2025-03476 Aliases CVE-2025-3931GHSA-rpg2-jvhp-h354

Yggdrasil: local privilege escalation in yggdrasil

Priority LOW 35CWE-280Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

A flaw was found in Yggdrasil, which acts as a system broker, allowing the processes to communicate to other children's "worker" processes through the DBus component. Yggdrasil creates a DBus method to dispatch messages to workers. However, it misses authentication and authorization checks, allowing every system user to call it. One available Yggdrasil worker acts as a package manager with capabilities to create and enable new repositories and install or remove packages. This flaw allows an attacker with access to the system to leverage the lack of authentication on the dispatch message to force the Yggdrasil worker to install arbitrary RPM packages. This issue results in local privilege escalation, enabling the attacker to access and modify sensitive system data.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00181 7th percentileScored 2026-11-07
Fix Fixed yggdrasil: 0.4.7Red Hat: 1 advisory

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—yggdrasilbefore 0.4.70.4.7Patch availableCNA
Red HatRed Hat Enterprise Linux 10—0.4.5-3.el10_0Patch availableCNA
Red HatRed Hat Enterprise Linux 10——Not affectedCNA
Red HatRed Hat Enterprise Linux 8——Not affectedCNA
Red HatRed Hat Enterprise Linux 9——Not affectedCNA
Red HatRed Hat Satellite 6——Not affectedCNA
—github.com/redhatinsights/yggdrasil (Go)up to 0.4.6—No fix listedGHSA-rpg2-jvhp-h354
  • yggdrasil Vendor— Affected before 0.4.7 Fixed in 0.4.7 Patch available CNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 0.4.5-3.el10_0 Patch available CNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Satellite 6 VendorRed Hat Affected — Fixed in — Not affected CNA
  • github.com/redhatinsights/yggdrasil (Go) Vendor— Affected up to 0.4.6 Fixed in — No fix listed GHSA-rpg2-jvhp-h354

CPE names CNA · 5

CPEVersionsRoleVendor
cpe:/o:redhat:enterprise_linux:10.010.0—Red Hat
cpe:/a:redhat:enterprise_linux:1010—Red Hat
cpe:/a:redhat:enterprise_linux:88—Red Hat
cpe:/a:redhat:enterprise_linux:99—Red Hat
cpe:/a:redhat:satellite:66—Red Hat
  • cpe:/o:redhat:enterprise_linux:10.0 Versions 10.0 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:10 Versions 10 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:8 Versions 8 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:9 Versions 9 — ·Red Hat
  • cpe:/a:redhat:satellite:6 Versions 6 — ·Red Hat

Remediation

  • Fix · CNA yggdrasil Fixed in 0.4.7

Red Hat 1 advisory

  • RHSA-2025:7592 Released 2025-05-14 · Red Hat rating Important
    yggdrasil security update
    • Red Hat Enterprise Linux AppStream (v. 10) yggdrasil-0.4.5-3.el10_0
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) yggdrasil-devel-0.4.5-3.el10_0

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:7592
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2025:7592
Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Satellite 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-3931
  2. 2026-10-03 Alias added: GHSA-rpg2-jvhp-h354

References

Advisory 2

Other 5

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7412 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences