Vulnerability CVE-2013-2100
Published: 2014-09-29   Modified: 2014-09-30

Description:
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.

CVSS2 => (AV:N/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9.3/10
10/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Gentoo -> Portage 

 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
http://xforce.iss.net/xforce/xfdb/84315
https://bugs.gentoo.org/show_bug.cgi?id=469888
https://security.gentoo.org/glsa/201507-16
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