Improper certificate validation in Mozilla NSS
Priority LOW 36CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 23 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-295.
Summary
In Network Security Services before 3.44, a malformed Netscape Certificate Sequence can cause NSS to crash, resulting in a denial of service.
Why it matters now
EPSS 0.01399 72nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial NSS (Mozilla): 3.44Red Hat: 3 advisoriesRed Hat: 23 fixed, 1 without a fix
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 |
|---|---|---|---|---|---|
| Mozilla | NSS | before 3.44 | 3.44 | Patch available | CNA |
- NSS VendorMozilla Affected before 3.44 Fixed in 3.44 Patch available CNA
CPE configurations NVD · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:* | before 3.44 | Vulnerable | Mozilla |
| cpe:2.3:o:siemens:ruggedcom_rox_mx5000_firmware:*:*:*:*:*:*:*:* | before 2.14.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:ruggedcom_rox_mx5000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:ruggedcom_rox_rx1400_firmware:*:*:*:*:*:*:*:* | before 2.14.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:ruggedcom_rox_rx1400:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:ruggedcom_rox_rx1500_firmware:*:*:*:*:*:*:*:* | before 2.14.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:ruggedcom_rox_rx1500:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:ruggedcom_rox_rx1501_firmware:*:*:*:*:*:*:*:* | before 2.14.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:ruggedcom_rox_rx1501:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:ruggedcom_rox_rx1510_firmware:*:*:*:*:*:*:*:* | before 2.14.0 | Vulnerable | Siemens |
- cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:* Versions before 3.44 Vulnerable ·Mozilla
- cpe:2.3:o:siemens:ruggedcom_rox_mx5000_firmware:*:*:*:*:*:*:*:* Versions before 2.14.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:ruggedcom_rox_mx5000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:ruggedcom_rox_rx1400_firmware:*:*:*:*:*:*:*:* Versions before 2.14.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:ruggedcom_rox_rx1400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:ruggedcom_rox_rx1500_firmware:*:*:*:*:*:*:*:* Versions before 2.14.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:ruggedcom_rox_rx1500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:ruggedcom_rox_rx1501_firmware:*:*:*:*:*:*:*:* Versions before 2.14.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:ruggedcom_rox_rx1501:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:ruggedcom_rox_rx1510_firmware:*:*:*:*:*:*:*:* Versions before 2.14.0 Vulnerable ·Siemens
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:siemens:ruggedcom_rox_rx1510:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:ruggedcom_rox_rx1511_firmware:*:*:*:*:*:*:*:* | before 2.14.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:ruggedcom_rox_rx1511:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:ruggedcom_rox_rx1512_firmware:*:*:*:*:*:*:*:* | before 2.14.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:ruggedcom_rox_rx1512:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:ruggedcom_rox_rx5000_firmware:*:*:*:*:*:*:*:* | before 2.14.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:ruggedcom_rox_rx5000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:h:siemens:ruggedcom_rox_rx1510:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:ruggedcom_rox_rx1511_firmware:*:*:*:*:*:*:*:* Versions before 2.14.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:ruggedcom_rox_rx1511:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:ruggedcom_rox_rx1512_firmware:*:*:*:*:*:*:*:* Versions before 2.14.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:ruggedcom_rox_rx1512:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:ruggedcom_rox_rx5000_firmware:*:*:*:*:*:*:*:* Versions before 2.14.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:ruggedcom_rox_rx5000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
- Fix · CNA NSS (Mozilla) Fixed in 3.44
Red Hat 3 advisories
- RHSA-2021:0876 Released 2021-03-16 · Red Hat rating Moderatenss and nss-softokn security update
- Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) nss-3.36.0-9.el7_6, nss-softokn-3.36.0-7.el7_6, nss-softokn-freebl-3.36.0-7.el7_6 +2
- Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) nss-devel-3.36.0-9.el7_6, nss-pkcs11-devel-3.36.0-9.el7_6, nss-softokn-devel-3.36.0-7.el7_6 +1
- Red Hat Enterprise Linux Server EUS (v. 7.6) nss-3.36.0-9.el7_6, nss-3.36.0-9.el7_6.ppc, nss-devel-3.36.0-9.el7_6 +11
- Red Hat Enterprise Linux Server Optional EUS (v. 7.6) nss-pkcs11-devel-3.36.0-9.el7_6, nss-pkcs11-devel-3.36.0-9.el7_6.ppc
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) nss-3.36.0-9.el7_6, nss-devel-3.36.0-9.el7_6, nss-softokn-3.36.0-7.el7_6 +5
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) nss-pkcs11-devel-3.36.0-9.el7_6
- RHSA-2019:2237 Released 2019-08-06 · Red Hat rating Moderatenss, nss-softokn, nss-util, and nspr security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) nspr-4.21.0-1.el7, nss-3.44.0-4.el7, nss-softokn-3.44.0-5.el7 +4
- Red Hat Enterprise Linux Client Optional (v. 7) nspr-devel-4.21.0-1.el7, nss-devel-3.44.0-4.el7, nss-pkcs11-devel-3.44.0-4.el7 +3
- Red Hat Enterprise Linux ComputeNode (v. 7) nspr-4.21.0-1.el7, nss-3.44.0-4.el7, nss-softokn-3.44.0-5.el7 +4
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) nspr-devel-4.21.0-1.el7, nss-devel-3.44.0-4.el7, nss-pkcs11-devel-3.44.0-4.el7 +3
- Red Hat Enterprise Linux Server (v. 7) nspr-4.21.0-1.el7, nspr-4.21.0-1.el7.ppc, nspr-devel-4.21.0-1.el7 +19
- Red Hat Enterprise Linux Server Optional (v. 7) nss-pkcs11-devel-3.44.0-4.el7, nss-pkcs11-devel-3.44.0-4.el7.ppc
- Red Hat Enterprise Linux Workstation (v. 7) nspr-4.21.0-1.el7, nspr-devel-4.21.0-1.el7, nss-3.44.0-4.el7 +9
- Red Hat Enterprise Linux Workstation Optional (v. 7) nss-pkcs11-devel-3.44.0-4.el7
- RHSA-2019:1951 Released 2019-07-30 · Red Hat rating Moderatenss and nspr security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) nspr-4.21.0-2.el8_0, nspr-devel-4.21.0-2.el8_0, nss-3.44.0-7.el8_0 +9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss Enterprise Application Platform 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2019:1951 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2019:2237 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2019:2237 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2019:2237 |
| Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) | Fixed | RHSA-2021:0876 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2019:2237 |
| Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) | Fixed | RHSA-2021:0876 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | — |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | — |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | — |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | — |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | — |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2019:2237 |
| Red Hat Enterprise Linux Server EUS (v. 7.6) | Fixed | RHSA-2021:0876 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | — |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2019:2237 |
| Red Hat Enterprise Linux Server Optional EUS (v. 7.6) | Fixed | RHSA-2021:0876 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | — |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2019:2237 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | — |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2019:2237 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2021:0876 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2021:0876 |
Timeline
- 2026-10-02 Threatist record created from CVE-2019-17007
- 2026-10-03 Alias added: GHSA-fcjm-r5rj-fq7w
References
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-2019-17007 · CVE Program
- CVE-2019-17007 · NVD
- FIRST EPSS
- GHSA-fcjm-r5rj-fq7w · GitHub Advisory Database · CC BY 4.0
- CVE-2019-17007 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences