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Debian Linux CVE-2015-2808

LOW
Use of a Broken or Risky Cryptographic Algorithm (CWE-327)
2015-04-01 cve@mitre.org
3.7
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Approved algorithm selection
Impact

CVSS score of 3.7 (LOW). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 33.88%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the low-severity affected system.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
Patch available 33.9% exploitation probability (EPSS)

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AnalysisAI

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. Rated low severity (CVSS 3.7), this vulnerability is remotely exploitable, no authentication required. Epss exploitation probability 33.9%.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-327. 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. Affected products include: Oracle Communications Application Session Controller, Oracle Communications Policy Management, Oracle Http Server, Oracle Integrated Lights Out Manager Firmware, Debian Debian Linux.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 3.7 LOW
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

7
Severity Changed
May 28, 2026 - 00:22 NVD
CRITICAL LOW
CVSS changed
May 28, 2026 - 00:22 NVD
10.0 (CRITICAL) 3.7 (LOW)
Severity Changed
May 28, 2026 - 00:22 NVD
CRITICAL LOW
CVSS changed
May 28, 2026 - 00:22 NVD
10.0 (CRITICAL) 3.7 (LOW)
Severity Changed
May 27, 2026 - 19:37 NVD
MEDIUM CRITICAL
CVSS changed
May 27, 2026 - 19:37 NVD
5.0 (MEDIUM) 10.0 (CRITICAL)
CVE Published
Apr 01, 2015 - 02:00 cve.org
LOW 3.7

DescriptionCVE.org

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.

Threat Intelligence Overview

EPSS Score
33.9%
Top 3% exploitable
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity LOW
CISA KEV No
Public POC No
EPSS 33.9%
Patch available Yes
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Low

Priority Score

52
Low Medium High Critical
KEV: 0
EPSS: +34
CVSS: +18
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:a:oracle:communications_application_session_controller:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_policy_management:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:11.1.1.7.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:11.1.1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:12.1.3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:12.2.1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:12.2.1.2.0:*:*:*:*:*:*:*
cpe:2.3:o:oracle:integrated_lights_out_manager_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:oracle:integrated_lights_out_manager_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:satellite:5.7:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:6.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:7.1:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:7.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:7.3:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*
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References

Advisories & patches
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