CVE-2013-4458: Stack-based buffer overflow in the getaddrinfo function in sysdeps/posix/getaddrinfo.c in GNU C Library (ak...

Security readout for executives and security teams

CVE-2013-4458 is a denial-of-service flaw in glibc, a core Linux system library. A crafted hostname or IP address resolution case can crash affected software. The sources do not show active exploitation, but old Linux systems may still expose business services to outages if they run vulnerable libc packages. Exposure is most likely on legacy Linux systems using glibc/libc6 2.18 or earlier, especially where network-facing applications resolve attacker-influenced hostnames or IP addresses. Distribution backports may mean package changelogs matter more than upstream version numbers. Treat this as a moderate legacy-platform risk. It is not documented here as actively exploited, but it affects a foundational library and can crash dependent services. Prioritize patch confirmation on internet-facing and unsupported Linux systems. Mitigation focus: Apply vendor glibc/libc6 security updates for the affected distribution.; Prioritize externally reachable services that resolve untrusted hostnames or IP addresses.; Retire, upgrade, or isolate unsupported systems stuck on vulnerable libc packages..

Prepared

Jun 14, 2026, 15:13 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.