GLSA 200703-22: Mozilla Network Security Service: Remote execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	Mozilla Network Security Service: Remote execution of arbitrary code
Date:	03/20/2007
Bugs:	#165555
ID:	200703-22

Synopsis

The Mozilla Network Security Services libraries are vulnerable to two buffer overflows that could result in the remote execution of arbitrary code.

Background

The Mozilla Network Security Service is a library implementing security features like SSL v2/v3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12, S/MIME and X.509 certificates.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-libs/nss	< 3.11.5	>= 3.11.5	All supported architectures

Description

iDefense has reported two potential buffer overflow vulnerabilities found by researcher "regenrecht" in the code implementing the SSLv2 protocol.

Impact

A remote attacker could send a specially crafted SSL master key to a server using NSS for the SSLv2 protocol, or entice a user to connect to a malicious server with a client-side application using NSS like one of the Mozilla products. This could trigger the vulnerabilities and result in the possible execution of arbitrary code with the rights of the vulnerable application.

Workaround

Disable the SSLv2 protocol in the applications using NSS.

Resolution

All NSS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/nss-3.11.5"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200703-22.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.