Medium severity · published Jan 29, 2020
CVE-2020-2102
Jenkins 2.218 and earlier, LTS 2.204.1 and earlier used a non-constant time comparison function when validating an HMAC
5.3
CVSS
1.4%
EPSS
No
On KEV
Description
Jenkins 2.218 and earlier, LTS 2.204.1 and earlier used a non-constant time comparison function when validating an HMAC.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins · Jenkins
through 2.204.1; through 2.218 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-2102
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-2102
Mailing List
http://www.openwall.com/lists/oss-security/2020/01/29/1
access.redhat.com
https://access.redhat.com/errata/RHBA-2020:0402
access.redhat.com
https://access.redhat.com/errata/RHBA-2020:0675
access.redhat.com
https://access.redhat.com/errata/RHSA-2020:0681
access.redhat.com
https://access.redhat.com/errata/RHSA-2020:0683
Vendor Advisory
https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1660
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