Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2015-7547

Multiple stack-based buffer overflows in the (1) send_dg and (2) send_vc functions in the libresolv library in the GNU C Library (aka glibc or libc6) before 2.23 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted DNS response that triggers a call to the getaddrinfo function with the AF_UNSPEC or AF_INET6 address family, related to performing "dual A/AAAA DNS queries" and the libnss_dns.so.2 NSS module.

  • Published: Feb 18, 2016
  • Updated: Nov 9, 2025
  • CVE: CVE-2015-7547
  • Severity: Medium
  • Exploit:

CVSS v2:

  • Severity: Medium
  • Score: 6.8
  • AV:N/AC:M/Au:N/C:P/I:P/A:P

CWEs:

Software From Fixed in
debian / debian_linux 8.0 8.0.x
canonical / ubuntu_linux 12.04 12.04.x
canonical / ubuntu_linux 15.10 15.10.x
canonical / ubuntu_linux 14.04 14.04.x
hp / server_migration_pack 7.5 7.5.x
hp / helion_openstack 1.1.1 1.1.1.x
hp / helion_openstack 2.1.0 2.1.0.x
hp / helion_openstack 2.0.0 2.0.0.x
sophos / unified_threat_management_software 9.319 9.319.x
sophos / unified_threat_management_software 9.355 9.355.x
suse / linux_enterprise_server 11.0-sp4 11.0-sp4.x
suse / linux_enterprise_debuginfo 11.0-sp2 11.0-sp2.x
suse / linux_enterprise_software_development_kit 11.0-sp4 11.0-sp4.x
suse / linux_enterprise_server 11.0-sp3 11.0-sp3.x
suse / linux_enterprise_software_development_kit 12-sp1 12-sp1.x
suse / linux_enterprise_desktop 11.0-sp3 11.0-sp3.x
suse / linux_enterprise_software_development_kit 12 12.x
suse / linux_enterprise_server 11.0-sp2 11.0-sp2.x
suse / linux_enterprise_server 12-sp1 12-sp1.x
suse / linux_enterprise_debuginfo 11.0-sp4 11.0-sp4.x
suse / linux_enterprise_desktop 11.0-sp4 11.0-sp4.x
suse / linux_enterprise_software_development_kit 11.0-sp3 11.0-sp3.x
suse / linux_enterprise_desktop 12 12.x
suse / linux_enterprise_debuginfo 11.0-sp3 11.0-sp3.x
suse / linux_enterprise_desktop 12-sp1 12-sp1.x
opensuse / opensuse 13.2 13.2.x
suse / suse_linux_enterprise_server 12 12.x
oracle / exalogic_infrastructure 1.0 1.0.x
oracle / exalogic_infrastructure 2.0 2.0.x
f5 / big-ip_local_traffic_manager 12.0.0 12.0.0.x
f5 / big-ip_policy_enforcement_manager 12.0.0 12.0.0.x
f5 / big-ip_application_acceleration_manager 12.0.0 12.0.0.x
f5 / big-ip_access_policy_manager 12.0.0 12.0.0.x
f5 / big-ip_analytics 12.0.0 12.0.0.x
f5 / big-ip_advanced_firewall_manager 12.0.0 12.0.0.x
f5 / big-ip_domain_name_system 12.0.0 12.0.0.x
f5 / big-ip_application_security_manager 12.0.0 12.0.0.x
f5 / big-ip_link_controller 12.0.0 12.0.0.x
oracle / fujitsu_m10_firmware - 2290.x
redhat / enterprise_linux_desktop 7.0 7.0.x
redhat / enterprise_linux_server_aus 7.2 7.2.x
redhat / enterprise_linux_workstation 7.0 7.0.x
redhat / enterprise_linux_server 7.0 7.0.x
redhat / enterprise_linux_hpc_node 7.0 7.0.x
redhat / enterprise_linux_server_eus 7.2 7.2.x
redhat / enterprise_linux_hpc_node_eus 7.2 7.2.x
gnu / glibc 2.9 2.9.x
gnu / glibc 2.11 2.11.x
gnu / glibc 2.10.1 2.10.1.x
gnu / glibc 2.17 2.17.x
gnu / glibc 2.14 2.14.x
gnu / glibc 2.22 2.22.x
gnu / glibc 2.20 2.20.x
gnu / glibc 2.13 2.13.x
gnu / glibc 2.12.1 2.12.1.x
gnu / glibc 2.19 2.19.x
gnu / glibc 2.10 2.10.x
gnu / glibc 2.14.1 2.14.1.x
gnu / glibc 2.11.2 2.11.2.x
gnu / glibc 2.16 2.16.x
gnu / glibc 2.18 2.18.x
gnu / glibc 2.11.3 2.11.3.x
gnu / glibc 2.11.1 2.11.1.x
gnu / glibc 2.21 2.21.x
gnu / glibc 2.15 2.15.x
gnu / glibc 2.12 2.12.x
gnu / glibc 2.12.2 2.12.2.x

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.