Bug 652676 (CVE-2018-8970)

Summary:	<dev-libs/libressl-2.7.1: silent omission of hostname verification (CVE-2018-8970)
Product:	Gentoo Security	Reporter:	GLSAMaker/CVETool Bot <glsamaker>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	trivial	CC:	libressl
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://bugs.chromium.org/p/chromium/issues/detail?id=824799
Whiteboard:	~3 [noglsa cve]
Package list:		Runtime testing required:	---

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.