OESA-2021-1115 (CVE-2020-12403)
Vulnerability from osv_openeuler – Published: 2021-04-07 11:04 – Updated: 2026-08-06 11:04 – Source websiteNetwork Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled client and server applications. Applications built with NSS can support SSL v2 and v3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12, S/MIME, X.509 v3 certificates, and other security standards.
Security Fix(es):
A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from this vulnerability is to confidentiality and system availability.(CVE-2020-12403)
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.(CVE-2020-25648)
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"nss-3.54.0-6.oe1.aarch64.rpm",
"nss-help-3.54.0-6.oe1.aarch64.rpm",
"nss-util-3.54.0-6.oe1.aarch64.rpm",
"nss-debugsource-3.54.0-6.oe1.aarch64.rpm",
"nss-util-devel-3.54.0-6.oe1.aarch64.rpm",
"nss-softokn-devel-3.54.0-6.oe1.aarch64.rpm",
"nss-devel-3.54.0-6.oe1.aarch64.rpm",
"nss-softokn-3.54.0-6.oe1.aarch64.rpm",
"nss-debuginfo-3.54.0-6.oe1.aarch64.rpm"
],
"src": [
"nss-3.54.0-6.oe1.src.rpm"
],
"x86_64": [
"nss-util-3.54.0-6.oe1.x86_64.rpm",
"nss-debugsource-3.54.0-6.oe1.x86_64.rpm",
"nss-3.54.0-6.oe1.x86_64.rpm",
"nss-help-3.54.0-6.oe1.x86_64.rpm",
"nss-softokn-3.54.0-6.oe1.x86_64.rpm",
"nss-debuginfo-3.54.0-6.oe1.x86_64.rpm",
"nss-softokn-devel-3.54.0-6.oe1.x86_64.rpm",
"nss-util-devel-3.54.0-6.oe1.x86_64.rpm",
"nss-devel-3.54.0-6.oe1.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:20.03-LTS",
"name": "nss",
"purl": "pkg:rpm/openEuler/nss\u0026distro=openEuler-20.03-LTS"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.54.0-6.oe1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "High"
},
"details": "Network Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled client and server applications. Applications built with NSS can support SSL v2 and v3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12, S/MIME, X.509 v3 certificates, and other security standards.\r\n\r\nSecurity Fix(es):\r\n\r\nA flaw was found in the way CHACHA20-POLY1305 was implemented in NSS. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from this vulnerability is to confidentiality and system availability.(CVE-2020-12403)\n\nA 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.(CVE-2020-25648)",
"id": "OESA-2021-1115",
"modified": "2026-08-06T11:04:21Z",
"published": "2021-04-07T11:04:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1115"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12403"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25648"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "nss security update",
"upstream": [
"CVE-2020-12403",
"CVE-2020-25648"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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