Overview
The Mozilla Network Security Services library fails to properly verify RSA signatures. This vulnerability may allow an attacker to forge RSA signatures.
Description
RSA signatures are used to authenticate the source of a message. To prevent RSA signatures from being forged, messages are padded with data to ensure message hashes are adequately sized. The Mozilla Network Security Services (NSS) library fails to properly verify the padding in RSA signatures, ignoring data at the end of a signature. If this data is ignored and an RSA key with a public exponent of three is used, it may be possible to forge the signing key's signature. For more information refer to Mozilla Foundation Security Advisory 2006-66. |
Impact
This vulnerability may allow an attacker to forge an RSA signature. |
Solution
Apply an update |
Vendor Information
CVSS Metrics
| Group | Score | Vector |
|---|---|---|
| Base | ||
| Temporal | ||
| Environmental |
References
- http://www.mozilla.org/security/announce/2006/mfsa2006-60.html
- http://www.mozilla.org/security/announce/2006/mfsa2006-66.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=356215
- http://secunia.com/advisories/22929/
- http://secunia.com/advisories/22980/
- http://secunia.com/advisories/23013/
- http://secunia.com/advisories/22763/
- http://secunia.com/advisories/23009/
- http://secunia.com/advisories/22815/
- http://secunia.com/advisories/22727/
- http://secunia.com/advisories/22770/
- http://secunia.com/advisories/22722/
- http://secunia.com/advisories/23883/
- http://www.securityfocus.com/bid/19849
Acknowledgements
This vulnerability was reported in Mozilla Foundation Security Advisory 2006-66. Mozilla credits Ulrich Kuehn for providing information concerning this issue.
This document was written by Chris Taschner.
Other Information
| CVE IDs: | CVE-2006-5462 |
| Severity Metric: | 7.56 |
| Date Public: | 2006-11-08 |
| Date First Published: | 2006-11-08 |
| Date Last Updated: | 2007-01-23 19:48 UTC |
| Document Revision: | 49 |