Bug 312489 – <net-libs/libesmtp-1.0.6: X.509 ASCII NUL spoofing (CVE-2010-{1192,1194})

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Alex Legler (RETIRED) 2010-03-31 19:44:47 UTC]

CVE-2010-1192 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-1192):
  libESMTP, probably 1.0.4 and earlier, does not properly handle a '\0'
  character in a domain name in the subject's Common Name (CN) 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.

[Comment 1 Alex Legler (RETIRED) 2010-03-31 19:46:38 UTC]

CVE-2010-1194 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-1194):
  The match_component function in smtp-tls.c in libESMTP 1.0.3.r1, and
  possibly other versions including 1.0.4, treats two strings as equal
  if one is a substring of the other, which allows remote attackers to
  spoof trusted certificates via a crafted subjectAltName.

[Comment 2 Tim Harder 2010-09-25 03:18:11 UTC]

I think these problems are fixed in libesmtp-1.0.6 which I just added to the tree.

[Comment 3 Samuli Suominen (RETIRED) 2010-09-28 10:29:46 UTC]

Test & stabilize:

=net-libs/libesmtp-1.0.6

[Comment 4 Andreas Schürch 2010-09-29 06:31:50 UTC]

Tests passed successful here on x86.

[Comment 5 Tobias Klausmann (RETIRED) 2010-10-02 15:05:20 UTC]

Stable on alpha.

[Comment 6 Markos Chandras (RETIRED) 2010-10-03 17:16:01 UTC]

amd64 done

[Comment 7 Markus Meier 2010-10-05 19:08:41 UTC]

x86 stable, thanks Andreas

[Comment 8 Raúl Porcel (RETIRED) 2010-10-09 16:34:46 UTC]

ia64/sparc stable

[Comment 9 Brent Baude (RETIRED) 2010-10-15 12:57:41 UTC]

ppc done

[Comment 10 Tim Sammut (RETIRED) 2010-11-20 16:53:27 UTC]

GLSA Vote: no.

[Comment 11 Stefan Behte (RETIRED) 2010-11-21 16:43:15 UTC]

Vote: NO. Barely used. Feel free to reopen, if you think otherwise.