Vulnerability Monitor

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CVE-2016-2402

OkHttp before 2.7.4 and 3.x before 3.1.2 allows man-in-the-middle attackers to bypass certificate pinning by sending a certificate chain with a certificate from a non-pinned trusted CA and the pinned certificate.

Published

2017-01-30T22:59:00.390

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

CVSSv2 Vector

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

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

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-295

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	squareup	okhttp	≤ 2.7.3	Yes
Application	squareup	okhttp3	3.0.0	Yes
Application	squareup	okhttp3	3.0.0	Yes
Application	squareup	okhttp3	3.0.1	Yes
Application	squareup	okhttp3	3.1.0	Yes
Application	squareup	okhttp3	3.1.1	Yes

References

http://www.openwall.com/lists/oss-security/2016/02/10/8 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2016/02/18/7 Mailing List, Third Party Advisory ([email protected])
https://koz.io/pinning-cve-2016-2402/ Technical Description, Third Party Advisory ([email protected])
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E ([email protected])
https://publicobject.com/2016/02/11/okhttp-certificate-pinning-vulnerability/ Vendor Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2016/02/10/8 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2016/02/18/7 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://koz.io/pinning-cve-2016-2402/ Technical Description, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E (af854a3a-2127-422b-91ae-364da2661108)
https://publicobject.com/2016/02/11/okhttp-certificate-pinning-vulnerability/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)