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opensslOpenSSLOPENSSL:CVE-2017-3733
HistoryFeb 16, 2017 - 12:00 a.m.

Vulnerability in OpenSSL - Encrypt-Then-Mac renegotiation crash

2017-02-1600:00:00
www.openssl-library.org
21

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.3

Confidence

High

EPSS

0.036

Percentile

91.9%

JSON

During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL to crash (dependent on ciphersuite). Both clients and servers are affected.

Found by Joe Orton (Red Hat).

Affected configurations

Vulners
Node
opensslopensslRange1.1.0–1.1.0e
VendorProductVersionCPE
opensslopenssl*cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*

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CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.3

Confidence

High

EPSS

0.036

Percentile

91.9%

JSON
Related for OPENSSL:CVE-2017-3733
f51ubuntucve1openvas6cvelist1ibm7prion1debiancve1checkpoint_advisories1osv1nessus3redhatcve1nvd1freebsd1cve1threatpost1myhack581cisco1kitploit1mageia1oracle2