CVE-2016-3706

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-06-10 · updated 2026-06-17
Weakness: CWE-20

Description

Stack-based buffer overflow in the getaddrinfo function in sysdeps/posix/getaddrinfo.c in the GNU C Library (aka glibc or libc6) allows remote attackers to cause a denial of service (crash) via vectors involving hostent conversion. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-4458.

Affected products

GNU C Library (glibc): before 2.23 — fixed in 2.23
Opensuse: 13.2

How to fix

Upgrade to a fixed version: GNU C Library (glibc) 2.23. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-updates/2016-06/msg00030.html
http://lists.opensuse.org/opensuse-updates/2016-07/msg00039.html
http://www-01.ibm.com/support/docview.wss?uid=swg21995039
http://www.securityfocus.com/bid/102073
http://www.securityfocus.com/bid/88440
https://source.android.com/security/bulletin/2017-12-01
https://sourceware.org/bugzilla/show_bug.cgi?id=20010
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=4ab2ab03d4351914ee53248dc5aef4a8c88ff8b9
http://lists.opensuse.org/opensuse-updates/2016-06/msg00030.html
http://lists.opensuse.org/opensuse-updates/2016-07/msg00039.html
http://www-01.ibm.com/support/docview.wss?uid=swg21995039
http://www.securityfocus.com/bid/102073

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