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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Concurrency control, locking
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 9.3 (CRITICAL). Attack characteristics: network attack vector, M complexity. EPSS exploitation probability: 1.57%.

Exploit ScenarioDerived

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

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
Patch available 1.6% exploitation probability (EPSS)

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AnalysisAI

Race condition in libssl in Mozilla Network Security Services (NSS) before 3.15.4, as used in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, SeaMonkey before. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable.

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

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-362. Race condition in libssl in Mozilla Network Security Services (NSS) before 3.15.4, as used in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, SeaMonkey before 2.24, and other products, allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via vectors involving a resumption handshake that triggers incorrect replacement of a session ticket. Affected products include: Mozilla Firefox, Mozilla Network Security Services, Mozilla Seamonkey, Mozilla Thunderbird, Oracle Enterprise Manager Ops Center. Version information: before 3.15.4.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.3 CRITICAL
AV:N/AC:M/Au:N/C:C/I:C/A:C

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
M
Confidentiality
C
Integrity
C
Availability
C

DescriptionCVE.org

Race condition in libssl in Mozilla Network Security Services (NSS) before 3.15.4, as used in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, SeaMonkey before 2.24, and other products, allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via vectors involving a resumption handshake that triggers incorrect replacement of a session ticket.

Threat Intelligence Overview

EPSS Score
1.6%
Top 18% exploitable
Data Quality
3 sources
Confidence: Low

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 CRITICAL
CISA KEV No
Public POC No
EPSS 1.6%
Patch available Yes
Active threat No
Deciding rule
CRITICAL severity
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

48
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +46
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Race conditions occur when multiple concurrent requests exploit the brief time gap between checking a condition and acting upon it (TOCTOU - Time of Check, Time of Use).

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.2.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:vm_server:3.2:*:*:*:*:*:x86:*
cpe:2.3:o:fedoraproject:fedora:19:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_desktop:11:sp3:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:*:vmware:*:*
cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp3:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
+ 3 more
CVE-2015-4000 LOW POC
3.7 May 21

The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not pro

CVE-2014-1568 HIGH
7.5 Sep 25

Mozilla Network Security Services (NSS) before 3.16.2.1, 3.16.x before 3.16.5, and 3.17.x before 3.17.1, as used in Mozi

CVE-2014-1569 HIGH POC
7.5 Dec 15

The definite_length_decoder function in lib/util/quickder.c in Mozilla Network Security Services (NSS) before 3.16.2.4 a

CVE-2015-7182 CRITICAL
9.8 Nov 05

Heap-based buffer overflow in the ASN.1 decoder in Mozilla Network Security Services (NSS) before 3.19.2.1 and 3.20.x be

CVE-2017-11697 HIGH POC
7.8 Dec 27

The __hash_open function in hash.c:229 in Mozilla Network Security Services (NSS) allows context-dependent attackers to

CVE-2017-11698 HIGH POC
7.8 Dec 27

Heap-based buffer overflow in the __get_page function in lib/dbm/src/h_page.c in Mozilla Network Security Services (NSS)

CVE-2017-11696 HIGH POC
7.8 Dec 27

Heap-based buffer overflow in the __hash_open function in lib/dbm/src/hash.c in Mozilla Network Security Services (NSS)

CVE-2017-11695 HIGH POC
7.8 Dec 27

Heap-based buffer overflow in the alloc_segs function in lib/dbm/src/hash.c in Mozilla Network Security Services (NSS) a

CVE-2014-1544 CRITICAL
10.0 Jul 23

Use-after-free vulnerability in the CERT_DestroyCertificate function in libnss3.so in Mozilla Network Security Services

CVE-2013-1740 MEDIUM POC
5.8 Jan 18

The ssl_Do1stHandshake function in sslsecur.c in libssl in Mozilla Network Security Services (NSS) before 3.15.4, when t

CVE-2017-5461 CRITICAL
9.8 May 11

Mozilla Network Security Services (NSS) before 3.21.4, 3.22.x through 3.28.x before 3.28.4, 3.29.x before 3.29.5, and 3.

CVE-2016-1950 HIGH
8.8 Mar 13

Heap-based buffer overflow in Mozilla Network Security Services (NSS) before 3.19.2.3 and 3.20.x and 3.21.x before 3.21.

References

Advisories & patches
PATCH https://bugzilla.mozilla.org/show_bug.cgi?id=930857 PATCH https://bugzilla.mozilla.org/show_bug.cgi?id=930874 ADVISORY http://www.mozilla.org/security/announce/2014/mfsa2014-12.html REF http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 REF http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127966.html REF http://lists.fedoraproject.org/pipermail/package-announce/2014-February/129218.html REF http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00004.html REF http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00005.html REF http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00010.html REF http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00017.html REF http://osvdb.org/102876 REF http://seclists.org/fulldisclosure/2014/Dec/23 REF http://secunia.com/advisories/56706 REF http://secunia.com/advisories/56767 REF http://secunia.com/advisories/56787 REF http://secunia.com/advisories/56858 REF http://secunia.com/advisories/56888 REF http://secunia.com/advisories/56922 REF http://www.debian.org/security/2014/dsa-2858 REF http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html REF http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html REF http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html REF http://www.oracle.com/technetwork/topics/security/cpuoct2014-1972960.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/65335 REF http://www.securitytracker.com/id/1029717 REF http://www.securitytracker.com/id/1029720 REF http://www.securitytracker.com/id/1029721 REF http://www.ubuntu.com/usn/USN-2102-1 REF http://www.ubuntu.com/usn/USN-2102-2 REF http://www.ubuntu.com/usn/USN-2119-1 REF http://www.vmware.com/security/advisories/VMSA-2014-0012.html REF https://8pecxstudios.com/?page_id=44080 REF https://exchange.xforce.ibmcloud.com/vulnerabilities/90885 REF https://security.gentoo.org/glsa/201504-01

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