Slackware Linux update for ruby

1) Cryptographic issues

EUVDB-ID: #VU32654

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-4073

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

The OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1.8.7-p374, 1.9 before 1.9.3-p448, and 2.0 before 2.0.0-p247 does not properly handle a '' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Mitigation

Update the affected package ruby.

Vulnerable software versions

Slackware Linux: 13.1 - 14.0

CPE2.3

• cpe:2.3:o:slackware:slackware_linux:13.1:*:*:*:*:*:*:*
• cpe:2.3:o:slackware:slackware_linux:13.37:*:*:*:*:*:*:*
• cpe:2.3:o:slackware:slackware_linux:14.0:*:*:*:*:*:*:*

External links

https://www.slackware.com/security/viewer.php?l=slackware-security&y=2013&m=slackware-security.444315

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.