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Vulnerability details: VCID-ea37-qh7w-aaaq
Vulnerability ID VCID-ea37-qh7w-aaaq
Aliases CVE-2020-25648
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.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-770 Allocation of Resources Without Limits or Throttling
System Score Found at
rhas Moderate https://access.redhat.com/errata/RHSA-2021:1384
rhas Moderate https://access.redhat.com/errata/RHSA-2021:3572
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-25648.json
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
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epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
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epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
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epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
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epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
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epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
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epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
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epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00437 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00816 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00816 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00816 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00816 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00816 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
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epss 0.00816 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00816 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
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epss 0.00816 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00816 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.00816 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.01415 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.01415 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.01415 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
epss 0.01415 https://api.first.org/data/v1/epss?cve=CVE-2020-25648
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 3.7 https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
generic_textual LOW https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2020-25648
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-25648
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-25648
cvssv3.1 5.3 https://www.oracle.com/security-alerts/cpuapr2022.html
generic_textual MODERATE https://www.oracle.com/security-alerts/cpuapr2022.html
cvssv3.1 5.3 https://www.oracle.com//security-alerts/cpujul2021.html
generic_textual MODERATE https://www.oracle.com//security-alerts/cpujul2021.html
cvssv3.1 8.2 https://www.oracle.com/security-alerts/cpuoct2021.html
generic_textual HIGH https://www.oracle.com/security-alerts/cpuoct2021.html
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-25648.json
https://api.first.org/data/v1/epss?cve=CVE-2020-25648
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25648
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.58_release_notes
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
https://lists.debian.org/debian-lts-announce/2023/10/msg00039.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERA5SVJQXQMDGES7RIT4F4NQVLD35RXN/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HRM53IQCPZT2US3M7JXTP6I6IBA5RGOD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RPOLN6DJUYQ3QBQEGLZGV73SNIPK7GHV/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ERA5SVJQXQMDGES7RIT4F4NQVLD35RXN/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HRM53IQCPZT2US3M7JXTP6I6IBA5RGOD/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RPOLN6DJUYQ3QBQEGLZGV73SNIPK7GHV/
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.oracle.com/security-alerts/cpuoct2021.html
cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
CVE-2020-25648 https://nvd.nist.gov/vuln/detail/CVE-2020-25648
GLSA-202012-21 https://security.gentoo.org/glsa/202012-21
RHBA-2021:2854 https://bugzilla.redhat.com/show_bug.cgi?id=1887319
RHSA-2021:1384 https://access.redhat.com/errata/RHSA-2021:1384
RHSA-2021:3572 https://access.redhat.com/errata/RHSA-2021:3572
USN-5410-1 https://usn.ubuntu.com/5410-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-25648.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-25648
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-25648
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-25648
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://www.oracle.com/security-alerts/cpuapr2022.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://www.oracle.com//security-alerts/cpujul2021.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N Found at https://www.oracle.com/security-alerts/cpuoct2021.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.28375
EPSS Score 0.00123
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.