ID

VAR-201401-0517

CVE

CVE-2013-7295

TITLE

Tor Vulnerability bypasses cryptographic protection mechanisms

DESCRIPTION

Tor before 0.2.4.20, when OpenSSL 1.x is used in conjunction with a certain HardwareAccel setting on Intel Sandy Bridge and Ivy Bridge platforms, does not properly generate random numbers for (1) relay identity keys and (2) hidden-service identity keys, which might make it easier for remote attackers to bypass cryptographic protection mechanisms via unspecified vectors. Tor (The Onion Router) is an implementation of the second generation onion routing, which is mainly used to access the Internet anonymously. There are security holes in Tor. An attacker could use this vulnerability to bypass security restrictions. There are vulnerabilities in Tor 0.2.4.19. Other versions may also be affected. This may aid in further attacks. Update to version 0.2.4.22 solves these major and security problems: - Block authority signing keys that were used on authorities vulnerable to the heartbleed bug in OpenSSL (CVE-2014-0160). - Fix a memory leak that could occur if a microdescriptor parse fails during the tokenizing step. - The relay ciphersuite list is now generated automatically based on uniform criteria, and includes all OpenSSL ciphersuites with acceptable strength and forward secrecy. - Relays now trust themselves to have a better view than clients of which TLS ciphersuites are better than others. - Clients now try to advertise the same list of ciphersuites as Firefox 28. For other changes see the upstream change log _______________________________________________________________________ References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-7295 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0160 http://advisories.mageia.org/MGASA-2014-0059.html http://advisories.mageia.org/MGASA-2014-0256.html _______________________________________________________________________ Updated Packages: Mandriva Business Server 1/X86_64: 77035fd2ff3c6df5effbaf9ee78bdaf4 mbs1/x86_64/tor-0.2.4.22-1.mbs1.x86_64.rpm cccaec1a8425ebfce0bb7d8057d38d6e mbs1/SRPMS/tor-0.2.4.22-1.mbs1.src.rpm _______________________________________________________________________ To upgrade automatically use MandrivaUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. All packages are signed by Mandriva for security. You can obtain the GPG public key of the Mandriva Security Team by executing: gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98 You can view other update advisories for Mandriva Linux at: http://www.mandriva.com/en/support/security/advisories/ If you want to report vulnerabilities, please contact security_(at)_mandriva.com _______________________________________________________________________ Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Mandriva Security Team <security*mandriva.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iD8DBQFTmDAPmqjQ0CJFipgRAqq4AJ9ZIEn/fqUynENotuSA2kTLnKwpJgCgkh59 ssWQCdn4l3H2KyxX+IQBsxw= =fSis -----END PGP SIGNATURE-----

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

encryption problem

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Unknown

SOURCES

LAST UPDATE DATE

2024-11-23T20:17:03.235000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE