Vulnerability Monitor

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CVE-2020-10185

The sync endpoint in YubiKey Validation Server before 2.40 allows remote attackers to replay an OTP. NOTE: this issue is potentially relevant to persons outside Yubico who operate a self-hosted OTP validation service with a non-default configuration such as an open sync pool; the issue does NOT affect YubiCloud.

Published

2020-03-05T23:15:13.353

Last Modified

2024-11-21T04:54:55.647

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.6 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-294

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	yubico	yubikey_one_time_password_validation_server	< 2.40	Yes

References

https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40 Release Notes, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html ([email protected])
https://www.yubico.com/support/security-advisories/ysa-2020-01/ Exploit, Vendor Advisory ([email protected])
https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html (af854a3a-2127-422b-91ae-364da2661108)
https://www.yubico.com/support/security-advisories/ysa-2020-01/ Exploit, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)