nss before version 3.30 is vulnerable to a remote denial of service during the session handshake when using SessionTicket extension and ECDH
nss before version 3.30 is vulnerable to a remote denial of service during the session handshake when using SessionTicket extension and ECDHE-ECDSA.
- Published
- Jul 19, 2018
- Updated
- Jun 16, 2026
- EPSS
- 1.4% · 71th percentile
- CWE
- CWE-325
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Report tools
Action score
23
Monitor
Low priority for now.
- CVSS
- 23 / 40 · 5.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.4%
CNA vs NVD score
- NVD
- 5.9
- CNA · redhat
- 5.9
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| mozilla | network security services | cpe:2.3:a:mozilla:network_security_services |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- mozilla network security servicesbefore 3.30
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
[UNKNOWN] nss
- nss 3.30affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | nss | before 2:3.25-1 | 2:3.25-1 |
| SUSE:Linux Enterprise Desktop 12 SP1 | java-1_8_0-openjdk | before 1.8.0.121-23.4 | 1.8.0.121-23.4 |
| SUSE:Linux Enterprise Desktop 12 SP1 | mozilla-nspr | before 4.13.1-18.1 | 4.13.1-18.1 |
| SUSE:Linux Enterprise Desktop 12 SP1 | mozilla-nss | before 3.29.5-57.1 | 3.29.5-57.1 |
| SUSE:Linux Enterprise Desktop 12 SP1 | MozillaFirefox | before 45.9.0esr-105.1 | 45.9.0esr-105.1 |
| SUSE:Linux Enterprise Software Development Kit 11 SP4 | mozilla-nspr | before 4.13.1-32.1 | 4.13.1-32.1 |
| SUSE:Linux Enterprise Software Development Kit 11 SP4 | mozilla-nss | before 3.29.5-46.1 | 3.29.5-46.1 |
| SUSE:Linux Enterprise Software Development Kit 11 SP4 | MozillaFirefox | before 45.9.0esr-71.2 | 45.9.0esr-71.2 |
Same product
mozilla: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-5461Mozilla 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 3.30.x before 3.30.1 a40Plan
- CVE-2009-2404Heap-based buffer overflow in a regular-expression parser in Mozilla Network Security Services (NSS) before 3.12.3, as used in Firefox, Thun38Monitor
- CVE-2018-12404A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content.36Monitor
- CVE-2016-2834Mozilla Network Security Services (NSS) before 3.23, as used in Mozilla Firefox before 47.0, allows remote attackers to cause a denial of se36Monitor
- CVE-2016-1950Heap-based buffer overflow in Mozilla Network Security Services (NSS) before 3.19.2.3 and 3.20.x and 3.21.x before 3.21.1, as used in Mozill36Monitor
- CVE-2015-7181The sec_asn1d_parse_leaf function in Mozilla Network Security Services (NSS) before 3.19.2.1 and 3.20.x before 3.20.1, as used in Firefox be32Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:nss | 2:3.25-1 · Debian:12 | Package registry (OSV) |
| suse:java-1_8_0-openjdk | 1.8.0.121-23.4 · SUSE:Linux Enterprise Desktop 12 SP1 | Package registry (OSV) |
| suse:mozilla-nspr | 4.13.1-32.1 · SUSE:Linux Enterprise Software Development Kit 11 SP4 | Package registry (OSV) |
| suse:mozilla-nss | 3.29.5-46.1 · SUSE:Linux Enterprise Software Development Kit 11 SP4 | Package registry (OSV) |
| suse:MozillaFirefox | 45.9.0esr-71.2 · SUSE:Linux Enterprise Software Development Kit 11 SP4 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-325 · Missing Cryptographic StepCVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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