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TI-2020-15665 Aliases CVE-2020-25648GHSA-43j5-76vw-pq2j

Resource allocation without limits in nss

Priority LOW 39CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 10 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-770.

Summary

A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58.

Why it matters now

EPSS 0.03505 89th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 10 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—nssnss versions before 3.58—No fix listedCNA
  • nss Vendor— Affected nss versions before 3.58 Fixed in — No fix listed CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:*before 3.58VulnerableMozilla
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*31VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*32VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:*12.0.0.3.0VulnerableOracle
cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:*12.0.0.3.0VulnerableOracle
cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*before 9.2.6.0VulnerableOracle
  • cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:* Versions before 3.58 Vulnerable ·Mozilla
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Versions 31 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:* Versions 12.0.0.3.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:* Versions 12.0.0.3.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:* Versions before 9.2.6.0 Vulnerable ·Oracle

Remediation

Red Hat 2 advisories

  • RHSA-2021:3572 Released 2021-09-21 · Red Hat rating Moderate
    nss and nspr security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) nspr-4.32.0-1.el8_4, nspr-devel-4.32.0-1.el8_4, nss-3.67.0-6.el8_4 +9
  • RHSA-2021:1384 Released 2021-04-27 · Red Hat rating Moderate
    nss security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) nss-3.53.1-7.el7_9, nss-sysinit-3.53.1-7.el7_9, nss-tools-3.53.1-7.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) nss-devel-3.53.1-7.el7_9, nss-pkcs11-devel-3.53.1-7.el7_9
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) nss-devel-3.53.1-7.el7_9, nss-pkcs11-devel-3.53.1-7.el7_9
    • Red Hat Enterprise Linux Server (v. 7) nss-3.53.1-7.el7_9, nss-3.53.1-7.el7_9.ppc, nss-devel-3.53.1-7.el7_9 +3
    • Red Hat Enterprise Linux Server Optional (v. 7) nss-pkcs11-devel-3.53.1-7.el7_9, nss-pkcs11-devel-3.53.1-7.el7_9.ppc
    • Red Hat Enterprise Linux Workstation (v. 7) nss-3.53.1-7.el7_9, nss-devel-3.53.1-7.el7_9, nss-sysinit-3.53.1-7.el7_9 +1
    • Red Hat Enterprise Linux Workstation Optional (v. 7) nss-pkcs11-devel-3.53.1-7.el7_9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
7Server-RHMTC-1.4Fixed—
8Base-RHMTC-1.4Fixed—
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:3572
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2021:1384
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2021:1384
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2021:1384
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:1384
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2021:1384
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:1384
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2021:1384

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-25648
  2. 2026-10-03 Alias added: GHSA-43j5-76vw-pq2j
  3. 2026-10-09 EPSS moved to the 90th–95th percentile
  4. 2026-10-31 EPSS moved to the 50th–90th percentile

References

Patch 2

Advisory 6

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences