Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2015-2808

The RC4 algorithm, as used in the TLS protocol and SSL protocol, does not properly combine state data with key data during the initialization phase, which makes it easier for remote attackers to conduct plaintext-recovery attacks against the initial bytes of a stream by sniffing network traffic that occasionally relies on keys affected by the Invariance Weakness, and then using a brute-force approach involving LSB values, aka the "Bar Mitzvah" issue.

  • Published: Apr 1, 2015
  • Updated: Nov 9, 2025
  • CVE: CVE-2015-2808
  • Severity: Medium
  • Exploit:

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
Software From Fixed in
oracle / http_server 11.1.1.9.0 11.1.1.9.0.x
oracle / http_server 12.2.1.2.0 12.2.1.2.0.x
oracle / http_server 12.1.3.0.0 12.1.3.0.0.x
oracle / http_server 11.1.1.7.0 11.1.1.7.0.x
oracle / integrated_lights_out_manager_firmware 4.0.0 4.0.4.x
oracle / integrated_lights_out_manager_firmware 3.0.0 3.2.11.x
oracle / communications_application_session_controller 3.0.0 3.9.0.x
oracle / http_server 12.2.1.1.0 12.2.1.1.0.x
oracle / communications_policy_management - 9.9.2
debian / debian_linux 8.0 8.0.x
debian / debian_linux 7.0 7.0.x
redhat / enterprise_linux_desktop 7.0 7.0.x
redhat / enterprise_linux_server 5.0 5.0.x
redhat / enterprise_linux_workstation 7.0 7.0.x
redhat / satellite 5.7 5.7.x
redhat / enterprise_linux_server 7.0 7.0.x
redhat / enterprise_linux_workstation 5.0 5.0.x
redhat / enterprise_linux_server_aus 6.6 6.6.x
redhat / enterprise_linux_desktop 6.0 6.0.x
redhat / enterprise_linux_server 6.0 6.0.x
redhat / enterprise_linux_workstation 6.0 6.0.x
redhat / enterprise_linux_eus 7.1 7.1.x
redhat / enterprise_linux_eus 6.6 6.6.x
redhat / enterprise_linux_server_tus 7.3 7.3.x
redhat / enterprise_linux_desktop 5.0 5.0.x
redhat / enterprise_linux_server_aus 7.3 7.3.x
redhat / enterprise_linux_server_aus 7.4 7.4.x
redhat / enterprise_linux_eus 7.3 7.3.x
redhat / enterprise_linux_eus 7.4 7.4.x
redhat / enterprise_linux_eus 7.5 7.5.x
redhat / enterprise_linux_server_tus 7.6 7.6.x
redhat / enterprise_linux_server_aus 7.6 7.6.x
redhat / enterprise_linux_eus 7.6 7.6.x
redhat / enterprise_linux_eus 7.2 7.2.x
redhat / enterprise_linux_server_aus 7.7 7.7.x
redhat / enterprise_linux_server_tus 7.7 7.7.x
redhat / enterprise_linux_eus 7.7 7.7.x
suse / linux_enterprise_server 11-sp1 11-sp1.x
suse / linux_enterprise_desktop 11-sp3 11-sp3.x
suse / linux_enterprise_debuginfo 11-sp3 11-sp3.x
suse / linux_enterprise_server 11-sp3 11-sp3.x
suse / linux_enterprise_desktop 11-sp4 11-sp4.x
suse / linux_enterprise_software_development_kit 11-sp3 11-sp3.x
suse / linux_enterprise_debuginfo 11-sp4 11-sp4.x
suse / linux_enterprise_server 11-sp2 11-sp2.x
suse / linux_enterprise_server 10-sp4 10-sp4.x
opensuse / opensuse 13.1 13.1.x
opensuse / opensuse 13.2 13.2.x
suse / linux_enterprise_server 12 12.x
suse / linux_enterprise_software_development_kit 12 12.x
suse / linux_enterprise_desktop 12 12.x
suse / manager 1.7 1.7.x
canonical / ubuntu_linux 15.04 15.04.x
canonical / ubuntu_linux 12.04 12.04.x
canonical / ubuntu_linux 14.04 14.04.x
redhat / satellite 5.6 5.6.x
fujitsu / sparc_enterprise_m3000_firmware xcp xcp_1121
fujitsu / sparc_enterprise_m4000_firmware xcp xcp_1121
fujitsu / sparc_enterprise_m5000_firmware xcp xcp_1121
fujitsu / sparc_enterprise_m8000_firmware xcp xcp_1121
fujitsu / sparc_enterprise_m9000_firmware xcp xcp_1121
huawei / policy_center 100r003c10 100r003c10.x
huawei / policy_center 100r003c00 100r003c00.x
huawei / smc2.0 100r002c01 100r002c01.x
huawei / smc2.0 100r002c02 100r002c02.x
huawei / smc2.0 100r002c03 100r002c03.x
huawei / smc2.0 100r002c04 100r002c04.x
huawei / ultravr 100r003c00 100r003c00.x
huawei / oceanstor_replicationdirector 100r003c00 100r003c00.x
ibm / cognos_metrics_manager 10.2.1 10.2.1.x
ibm / cognos_metrics_manager 10.2 10.2.x
ibm / cognos_metrics_manager 10.1.1 10.1.1.x
ibm / cognos_metrics_manager 10.1 10.1.x
ibm / cognos_metrics_manager 10.2.2 10.2.2.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.