{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2020-12400", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "assignerShortName": "mozilla", "dateUpdated": "2024-08-04T11:56:52.044Z", "dateReserved": "2020-04-28T00:00:00", "datePublished": "2020-10-08T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2023-02-20T00:00:00"}, "descriptions": [{"lang": "en", "value": "When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack. This vulnerability affects Firefox < 80 and Firefox for Android < 80."}], "affected": [{"vendor": "Mozilla", "product": "Firefox", "versions": [{"version": "unspecified", "lessThan": "80", "status": "affected", "versionType": "custom"}]}, {"vendor": "Mozilla", "product": "Firefox for Android", "versions": [{"version": "unspecified", "lessThan": "80", "status": "affected", "versionType": "custom"}]}], "references": [{"url": "https://www.mozilla.org/security/advisories/mfsa2020-39/"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2020-36/"}, {"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1623116"}, {"name": "[debian-lts-announce] 20230220 [SECURITY] [DLA 3327-1] nss security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "P-384 and P-521 vulnerable to a side channel attack on modular inversion"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T11:56:52.044Z"}, "title": "CVE Program Container", "references": [{"url": "https://www.mozilla.org/security/advisories/mfsa2020-39/", "tags": ["x_transferred"]}, {"url": "https://www.mozilla.org/security/advisories/mfsa2020-36/", "tags": ["x_transferred"]}, {"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1623116", "tags": ["x_transferred"]}, {"name": "[debian-lts-announce] 20230220 [SECURITY] [DLA 3327-1] nss security update", "tags": ["mailing-list", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html"}]}]}}

{}

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{"acknowledgement": "Red Hat would like to thank the Mozilla Project for reporting this issue. Upstream acknowledges Cesar Pereida Garcia and the Network and Information Security Group (NISEC) as the original reporter.", "affected_release": [{"advisory": "RHSA-2020:4076", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "nspr-0:4.25.0-2.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-09-29T00:00:00Z"}, {"advisory": "RHSA-2020:4076", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "nss-0:3.53.1-3.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-09-29T00:00:00Z"}, {"advisory": "RHSA-2020:4076", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "nss-softokn-0:3.53.1-6.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-09-29T00:00:00Z"}, {"advisory": "RHSA-2020:4076", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "nss-util-0:3.53.1-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-09-29T00:00:00Z"}, {"advisory": "RHSA-2021:0538", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "nss-0:3.53.1-17.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-02-16T00:00:00Z"}, {"advisory": "RHSA-2021:0949", "cpe": "cpe:/a:redhat:openshift_do:1.0::el7", "package": "openshiftdo/odo-init-image-rhel7:1.1.3-2", "product_name": "Red Hat OpenShift Do", "release_date": "2021-03-22T00:00:00Z"}], "bugzilla": {"description": "nss: P-384 and P-521 implementation uses a side-channel vulnerable modular inversion function", "id": "1853983", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1853983"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N", "status": "verified"}, "cwe": "CWE-327", "details": ["When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack. This vulnerability affects Firefox < 80 and Firefox for Android < 80.", "A side-channel flaw was found in NSS, in the way P-384 and P-521 curves are used in the generation of EDSA signatures, leaking partial information about the ECDSA nonce. Given a small number of ECDSA signatures, this information can be used to steal the private key. The highest threat from this vulnerability is to data confidentiality."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2020-12400", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "nss", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "nss", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2020-07-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-12400\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-12400\nhttps://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.55_release_notes"], "statement": "This is a side-channel attack that can be used to exact pirate keys when ECDSA signatures are being generated. This attack is only feasible when the attacker is local to the machine or in certain cross-VM scenarios where the signature is being generated. Attacks over the network or via the internet are not feasible.", "threat_severity": "Moderate", "upstream_fix": "nss 3.55"}