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Vulnerability Assessment

Weakness
CWE
CWE-203
ASVS 5.0
V6 - Authentication Timing-safe comparisons
Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, M complexity. EPSS exploitation probability: 0.85%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.9% exploitation probability (EPSS)

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AnalysisAI

The TLS implementation in Mozilla Network Security Services (NSS) does not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-203. The TLS implementation in Mozilla Network Security Services (NSS) does not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169. Affected products include: Mozilla Network Security Services, Canonical Ubuntu Linux, Oracle Enterprise Manager Ops Center, Oracle Glassfish Communications Server, Oracle Glassfish Server.

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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
M
Confidentiality
P
Integrity
None
Availability
None

DescriptionCVE.org

The TLS implementation in Mozilla Network Security Services (NSS) does not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169.

Threat Intelligence Overview

EPSS Score
0.9%
Top 25% exploitable
Data Quality
3 sources
Confidence: Low
NVD CVE.org EPSS

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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.9%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

23
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

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:mozilla:network_security_services:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:11.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:glassfish_communications_server:2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:glassfish_server:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:iplanet_web_proxy_server:4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:iplanet_web_server:6.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:iplanet_web_server:7.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:opensso:3.0-03:*:*:*:*:*:*:*
cpe:2.3:a:oracle:traffic_director:11.1.1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:traffic_director:11.1.1.7.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:vm_server:3.2:*:*:*:*:*:x86:*
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_eus:5.9:*:*:*:*:*:*:*
+ 5 more

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References

Advisories & patches
REF http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 REF http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00009.html REF http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00010.html REF http://openwall.com/lists/oss-security/2013/02/05/24 REF http://rhn.redhat.com/errata/RHSA-2013-1135.html REF http://rhn.redhat.com/errata/RHSA-2013-1144.html REF http://seclists.org/fulldisclosure/2014/Dec/23 REF http://security.gentoo.org/glsa/glsa-201406-19.xml REF http://www.isg.rhul.ac.uk/tls/TLStiming.pdf REF http://www.oracle.com/technetwork/topics/security/cpuapr2014-1972952.html REF http://www.oracle.com/technetwork/topics/security/cpujan2014-1972949.html REF http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html REF http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html REF http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html REF http://www.securityfocus.com/archive/1/534161/100/0/threaded REF http://www.securityfocus.com/bid/57777 REF http://www.securityfocus.com/bid/64758 REF http://www.ubuntu.com/usn/USN-1763-1 REF http://www.vmware.com/security/advisories/VMSA-2014-0012.html

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