SB2014093011 - Cryptographic issues in Gentoo Portage

Description

This security bulletin contains information about 1 vulnerability.

1) Cryptographic issues (CVE-ID: CVE-2013-2100)

CWE-ID: CWE-310 - Cryptographic Issues

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The urlopen function in pym/portage/util/_urlopen.py in Gentoo Portage 2.1.12, when using HTTPS, does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and modify binary package lists via a crafted certificate.

Remediation

Install update from vendor's website.

References

• http://openwall.com/lists/oss-security/2013/05/15/5
• http://openwall.com/lists/oss-security/2013/05/16/3
• http://www.securityfocus.com/bid/59878
• https://bugs.gentoo.org/show_bug.cgi?id=469888
• https://exchange.xforce.ibmcloud.com/vulnerabilities/84315
• https://security.gentoo.org/glsa/201507-16