ghsa-fj6f-6933-839j
Vulnerability from github
Published
2022-05-24 17:07
Modified
2022-12-19 21:06
Severity
Summary
Non-constant time HMAC comparison
Details
Jenkins 2.218 and earlier, LTS 2.204.1 and earlier does not use a constant-time comparison when checking whether two HMACs are equal. This could potentially allow attackers to use statistical methods to obtain a valid HMAC for an attacker-controlled input value.
Jenkins 2.219, LTS 2.204.2 now uses a constant-time comparison when validating HMACs.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 2.204.1"
},
"package": {
"ecosystem": "Maven",
"name": "org.jenkins-ci.main:jenkins-core"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.204.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 2.218"
},
"package": {
"ecosystem": "Maven",
"name": "org.jenkins-ci.main:jenkins-core"
},
"ranges": [
{
"events": [
{
"introduced": "2.205"
},
{
"fixed": "2.219"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-2102"
],
"database_specific": {
"cwe_ids": [
"CWE-203",
"CWE-208"
],
"github_reviewed": true,
"github_reviewed_at": "2022-12-19T21:06:59Z",
"nvd_published_at": "2020-01-29T16:15:00Z",
"severity": "MODERATE"
},
"details": "Jenkins 2.218 and earlier, LTS 2.204.1 and earlier does not use a constant-time comparison when checking whether two HMACs are equal. This could potentially allow attackers to use statistical methods to obtain a valid HMAC for an attacker-controlled input value.\n\nJenkins 2.219, LTS 2.204.2 now uses a constant-time comparison when validating HMACs.",
"id": "GHSA-fj6f-6933-839j",
"modified": "2022-12-19T21:06:59Z",
"published": "2022-05-24T17:07:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-2102"
},
{
"type": "WEB",
"url": "https://github.com/jenkinsci/jenkins/commit/6f35dbb939ebe947bdb1979010b208480f1d0e31"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHBA-2020:0402"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHBA-2020:0675"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0681"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2020:0683"
},
{
"type": "PACKAGE",
"url": "https://github.com/jenkinsci/jenkins"
},
{
"type": "WEB",
"url": "https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1660"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2020/01/29/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Non-constant time HMAC comparison"
}
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