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Bug 652676 (CVE-2018-8970) - <dev-libs/libressl-2.7.1: silent omission of hostname verification (CVE-2018-8970)
Summary: <dev-libs/libressl-2.7.1: silent omission of hostname verification (CVE-2018-...
Status: RESOLVED FIXED
Alias: CVE-2018-8970
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal trivial (vote)
Assignee: Gentoo Security
URL: https://bugs.chromium.org/p/chromium/...
Whiteboard: ~3 [noglsa cve]
Keywords:
Depends on:
Blocks:
 
Reported: 2018-04-06 12:10 UTC by GLSAMaker/CVETool Bot
Modified: 2018-04-06 13:37 UTC (History)
1 user (show)

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Runtime testing required: ---

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Description GLSAMaker/CVETool Bot gentoo-dev 2018-04-06 12:10:24 UTC 
CVE-2018-8970 (https://nvd.nist.gov/vuln/detail/CVE-2018-8970):
  The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in
  LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a
  zero name length, which causes silent omission of hostname verification, and
  consequently allows man-in-the-middle attackers to spoof servers and obtain
  sensitive information via a crafted certificate. NOTE: the LibreSSL
  documentation indicates that this special case is supported, but the
  BoringSSL documentation does not.
Comment 1 Thomas Deutschmann (RETIRED) gentoo-dev 2018-04-06 12:16:43 UTC 
Only an unkeyworded version was affected. Fixed version available, repository is clean.
Comment 2 Anthony Basile gentoo-dev 2018-04-06 13:37:25 UTC 
(In reply to Thomas Deutschmann from comment #1)
> Only an unkeyworded version was affected. Fixed version available,
> repository is clean.

Yeah but I still removed 2.7.0 and 2.7.1.  Only 2.7.2 is still on the tree which is not vulnerable.