Vulnerability CVE-2020-2102
Published: 2020-01-29

Description:
Jenkins 2.218 and earlier, LTS 2.204.1 and earlier used a non-constant time comparison function when validating an HMAC.

Type:

CWE-203

 (Information Exposure Through Discrepancy)

CVSS2 => (AV:N/AC:M/Au:S/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.5/10
2.9/10
6.8/10
Exploit range
Attack complexity
Authentication
Remote
Medium
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Jenkins -> Jenkins 

 References:
http://www.openwall.com/lists/oss-security/2020/01/29/1
https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1660
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