Slackware Linux update for ruby

1) Cryptographic issues

EUVDB-ID: #VU43289

Risk: Medium

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

CVE-ID: CVE-2012-5371

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

Ruby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before r37575 computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack against a variant of the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4815.

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=2012&m=slackware-security.422575

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.