Gentoo Linux GLSA 201611-10 Normal: Libuv Privilege Escalation
gentoo
November 17, 2016
A vulnerability in libuv could lead to privilege escalation.
Summary
It was discovered that libuv does not call setgroups before calling setuid/setgid. If this is not called, then even though the uid has been dropped, there may still be groups associated that permit superuser privileges.
Topics Covered
Resolution
All libuv users should upgrade to the latest version:
# emerge --sync
# emerge --ask --verbose --oneshot ">=dev-libs/libuv-1.4.2"
References
[ 1 ] CVE-2015-0278 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-0278
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201611-10
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Concerns
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
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Severity: Normal
Title: libuv: Privilege escalation
Date: November 17, 2016
Bugs: #540826
ID: 201611-10
Topics Covered
Background
libuv is a multi-platform support library with a focus on asynchronous
I/O.
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Affected Packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/libuv < 1.4.2 >= 1.4.2
Impact
=====
Context-dependent attackers could escalate privileges via unspecified
vectors.
Workaround
There is no known workaround at this time.
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