Mozilla Network Security Services (NSS) 3.x, with certain settings of the…
Priority LOW 25Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
Mozilla Network Security Services (NSS) 3.x, with certain settings of the SSL_ENABLE_RENEGOTIATION option, does not properly restrict client-initiated renegotiation within the SSL and TLS protocols, which might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection, a different vulnerability than CVE-2011-1473. NOTE: it can also be argued that it is the responsibility of server deployments, not a security library, to prevent or limit renegotiation when it is inappropriate within a specific environment
Why it matters now
EPSS 0.02666 85th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 23
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:network_security_services:3.2:*:*:*:*:*:*:* | 3.2 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.2.1:*:*:*:*:*:*:* | 3.2.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.3:*:*:*:*:*:*:* | 3.3 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.3.1:*:*:*:*:*:*:* | 3.3.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.3.2:*:*:*:*:*:*:* | 3.3.2 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.4:*:*:*:*:*:*:* | 3.4 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.4.1:*:*:*:*:*:*:* | 3.4.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.4.2:*:*:*:*:*:*:* | 3.4.2 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.5:*:*:*:*:*:*:* | 3.5 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.6:*:*:*:*:*:*:* | 3.6 | Vulnerable | Mozilla |
- cpe:2.3:a:mozilla:network_security_services:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.2.1:*:*:*:*:*:*:* Versions 3.2.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.3:*:*:*:*:*:*:* Versions 3.3 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.3.1:*:*:*:*:*:*:* Versions 3.3.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.3.2:*:*:*:*:*:*:* Versions 3.3.2 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.4:*:*:*:*:*:*:* Versions 3.4 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.4.1:*:*:*:*:*:*:* Versions 3.4.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.4.2:*:*:*:*:*:*:* Versions 3.4.2 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.5:*:*:*:*:*:*:* Versions 3.5 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.6:*:*:*:*:*:*:* Versions 3.6 Vulnerable ·Mozilla
Show 13 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:network_security_services:3.6.1:*:*:*:*:*:*:* | 3.6.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.7:*:*:*:*:*:*:* | 3.7 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.7.1:*:*:*:*:*:*:* | 3.7.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.7.2:*:*:*:*:*:*:* | 3.7.2 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.7.3:*:*:*:*:*:*:* | 3.7.3 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.7.5:*:*:*:*:*:*:* | 3.7.5 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.7.7:*:*:*:*:*:*:* | 3.7.7 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.8:*:*:*:*:*:*:* | 3.8 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.9:*:*:*:*:*:*:* | 3.9 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.11.2:*:*:*:*:*:*:* | 3.11.2 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.11.3:*:*:*:*:*:*:* | 3.11.3 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.11.4:*:*:*:*:*:*:* | 3.11.4 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:network_security_services:3.11.5:*:*:*:*:*:*:* | 3.11.5 | Vulnerable | Mozilla |
- cpe:2.3:a:mozilla:network_security_services:3.6.1:*:*:*:*:*:*:* Versions 3.6.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.7:*:*:*:*:*:*:* Versions 3.7 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.7.1:*:*:*:*:*:*:* Versions 3.7.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.7.2:*:*:*:*:*:*:* Versions 3.7.2 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.7.3:*:*:*:*:*:*:* Versions 3.7.3 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.7.5:*:*:*:*:*:*:* Versions 3.7.5 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.7.7:*:*:*:*:*:*:* Versions 3.7.7 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.8:*:*:*:*:*:*:* Versions 3.8 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.9:*:*:*:*:*:*:* Versions 3.9 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.11.2:*:*:*:*:*:*:* Versions 3.11.2 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.11.3:*:*:*:*:*:*:* Versions 3.11.3 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.11.4:*:*:*:*:*:*:* Versions 3.11.4 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:network_security_services:3.11.5:*:*:*:*:*:*:* Versions 3.11.5 Vulnerable ·Mozilla
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 4 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2011-5094
- 2026-10-03 Alias added: GHSA-m896-wg3p-7ffv
References
Other 10
- http://vincent.bernat.im/en/blog/2011-ssl-dos-mitigation.html
- [tls] 20110315 Re: SSL Renegotiation DOS
- [tls] 20110318 Re: SSL Renegotiation DOS
- https://bugzilla.redhat.com/show_bug.cgi?id=707065
- http://www.educatedguesswork.org/2011/10/ssltls_and_computational_dos.html
- [oss-security] 20110708 SSL renegotiation DoS CVE-2011-1473
- [tls] 20110318 Re: SSL Renegotiation DOS
- http://orchilles.com/2011/03/ssl-renegotiation-dos.html
- [tls] 20110315 SSL Renegotiation DOS
- [tls] 20110315 Re: SSL Renegotiation DOS
More Mozilla Network Security Services vulnerabilities
- TI-2015-03381 The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server… CVSS 3.1LOW 3.7
- TI-2007-00009 Stack-based buffer overflow in the SSLv2 support in Mozilla Network Security Services… CVSS 2.0MEDIUM 6.8
- TI-2018-08903 A cached side channel attack during handshakes using RSA encryption could allow for the… CVSS 3.0MEDIUM 5.9
- TI-2015-05957 Heap-based buffer overflow in the ASN.1 decoder in Mozilla Network Security Services… CVSS 3.0CRITICAL 9.8
- TI-2004-00763 Heap-based buffer overflow in Netscape Network Security Services (NSS) library allows… CVSS 2.0HIGH 7.5
- TI-2014-01197 Use-after-free vulnerability in the CERT_DestroyCertificate function in libnss3.so in… CVSS 2.0HIGH 10.0
Sources
- CVE-2011-5094 · CVE Program
- CVE-2011-5094 · NVD
- FIRST EPSS
- GHSA-m896-wg3p-7ffv · GitHub Advisory Database · CC BY 4.0
- CVE-2011-5094 · Red Hat security data · CC BY 4.0
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