| <?xml version="1.0" encoding="utf-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200610-06"> |
| <title>Mozilla Network Security Service (NSS): RSA signature forgery</title> |
| <synopsis> |
| NSS fails to properly validate PKCS #1 v1.5 signatures. |
| </synopsis> |
| <product type="ebuild">nss</product> |
| <announced>October 17, 2006</announced> |
| <revised>October 17, 2006: 01</revised> |
| <bug>148283</bug> |
| <access>remote</access> |
| <affected> |
| <package name="dev-libs/nss" auto="yes" arch="*"> |
| <unaffected range="ge">3.11.3</unaffected> |
| <vulnerable range="lt">3.11.3</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p> |
| The Mozilla Network Security Service is a library implementing security |
| features like SSL v.2/v.3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12, |
| S/MIME and X.509 certificates. |
| </p> |
| </background> |
| <description> |
| <p> |
| Daniel Bleichenbacher discovered that it might be possible to forge |
| signatures signed by RSA keys with the exponent of 3. This affects a |
| number of RSA signature implementations, including Mozilla's NSS. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p> |
| Since several Certificate Authorities (CAs) are using an exponent of 3 |
| it might be possible for an attacker to create a key with a false CA |
| signature. This impacts any software using the NSS library, like the |
| Mozilla products Firefox, Thunderbird and Seamonkey. |
| </p> |
| </impact> |
| <workaround> |
| <p> |
| There is no known workaround at this time. |
| </p> |
| </workaround> |
| <resolution> |
| <p> |
| All NSS users should upgrade to the latest version: |
| </p> |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=dev-libs/nss-3.11.3"</code> |
| <p> |
| Note: As usual after updating a library, you should run |
| 'revdep-rebuild' (from the app-portage/gentoolkit package) to ensure |
| that all applications linked to it are properly rebuilt. |
| </p> |
| </resolution> |
| <references> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4339">CVE-2006-4339</uri> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4340">CVE-2006-4340</uri> |
| </references> |
| <metadata tag="requester" timestamp="Mon, 25 Sep 2006 12:57:17 +0000"> |
| frilled |
| </metadata> |
| <metadata tag="bugReady" timestamp="Tue, 03 Oct 2006 18:27:05 +0000"> |
| vorlon078 |
| </metadata> |
| <metadata tag="submitter" timestamp="Sun, 08 Oct 2006 19:45:16 +0000"> |
| frilled |
| </metadata> |
| </glsa> |