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Bug 611354 (CVE-2017-2626)

Summary: <x11-libs/libICE-1.0.9-r1: weak entropy usage in session keys
Product: Gentoo Security Reporter: Thomas Deutschmann (RETIRED) <whissi>
Component: VulnerabilitiesAssignee: Gentoo Security <security>
Severity: critical CC: x11
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
See Also:
Whiteboard: A1 [glsa cve]
Package list:
Runtime testing required: ---
Bug Depends on: 611056    
Bug Blocks:    

Description Thomas Deutschmann (RETIRED) gentoo-dev 2017-03-02 00:13:22 UTC
libICE depends on arc4random() as well to generate the session cookies, thereby falling back to the same weak mechanism as libXdmcp (bug 611352).
Comment 1 Thomas Deutschmann (RETIRED) gentoo-dev 2017-03-02 00:14:54 UTC
We will have to check, most Gentoo architectures shouldn't be affected due to

> elibc_glibc? ( dev-libs/libbsd )
Comment 2 Matt Turner gentoo-dev 2017-03-02 03:26:34 UTC
libICE-1.0.9-r1 depends on libbsd, but it is not stabilized yet. We will need to do that.
Comment 3 Matt Turner gentoo-dev 2017-03-04 16:13:24 UTC
Stabilization will be handled in bug 611056.
Comment 4 Matt Turner gentoo-dev 2017-03-16 16:13:47 UTC
Vulnerable versions dropped:

commit 8bd3d32950f98d616d97c0df66a841eb5c6f7f0c
Author: Matt Turner <>
Date:   Thu Mar 16 09:11:52 2017 -0700

    x11-libs/libICE: Drop vulnerable versions.
Comment 5 Thomas Deutschmann (RETIRED) gentoo-dev 2017-03-18 13:14:44 UTC
New GLSA request filed.
Comment 6 GLSAMaker/CVETool Bot gentoo-dev 2017-04-10 21:36:17 UTC
This issue was resolved and addressed in
 GLSA 201704-03 at
by GLSA coordinator Kristian Fiskerstrand (K_F).