Memory leak in Glibc - CVE-2016-5417
Published: February 12, 2023 / Updated: June 3, 2025
Vulnerability identifier: #VU110100
CSH Severity: Medium
CVSSv4.0:
CVE-ID: CVE-2016-5417
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Glibc
Glibc
Software vendor:
GNU
GNU
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the __res_vinit function in the IPv6 name server management code in libresolv in GNU C Library (aka glibc or libc6) before 2.24 allows remote attackers to cause a denial of service (memory consumption) by leveraging partial initialization of internal resolver data structures. A remote attacker can perform a denial of service attack.
Remediation
Install update from vendor's website.
External links
- https://www.sourceware.org/ml/libc-alpha/2016-08/msg00212.html
- https://sourceware.org/bugzilla/show_bug.cgi?id=19257
- http://www.securityfocus.com/bid/92257
- http://www.openwall.com/lists/oss-security/2016/08/02/5
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=2212c1420c92a33b0e0bd9a34938c9814a56c0f7