Gentoo: GLSA 201607-13 Normal: libbsd Arbitrary Code Execution
gentoo
July 20, 2016
A buffer overflow in libbsd might allow remote attackers to execute arbitrary code.
Summary
libbsd contains a buffer overflow in the fgetwln() function. An if statement, which is responsible for checking the necessity to reallocate memory in the target buffer, is off by one therefore an out of bounds write occurs.
Resolution
All libbsd users should upgrade to the latest version:
# emerge --sync
# emerge --ask --verbose --oneshot ">=dev-libs/libbsd-0.8.2"
References
[ 1 ] CVE-2016-2090 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2090
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201607-13
style>.gentoo_availability{display:block;}
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: libbsd: Arbitrary code execution
Date: July 20, 2016
Bugs: #573160
ID: 201607-13
Background
This library provides useful functions commonly found on BSD systems,
and lacking on others like GNU systems, thus making it easier to port
projects with strong BSD origins, without needing to embed the same
code over and over again on each project.
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Affected Packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/libbsd < 0.8.2 >= 0.8.2
Impact
=====
Remote attackers could potentially execute arbitrary code with the
privileges of the process.
Workaround
There is no known workaround at this time.
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