CVE-2019-14318

Crypto++ 8.3.0 and earlier contains a timing side channel in ECDSA signature generation. This allows a local or remote attacker, able to measure the duration of hundreds to thousands of signing operations, to compute the private key used. The issue occurs because scalar multiplication in ecp.cpp (prime field curves, small leakage) and algebra.cpp (binary field curves, large leakage) is not constant time and leaks the bit length of the scalar among other information.

CVSS v3.0 5.9 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.9^/10

CVSS v3.0 : MEDIUM

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://tches.iacr.org/index.php/TCHES/article/view/7337	Third Party Advisory
https://eprint.iacr.org/2011/232.pdf	Exploit Third Party Advisory
https://github.com/weidai11/cryptopp/issues/869	Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00066.html
http://www.openwall.com/lists/oss-security/2019/10/02/2
https://minerva.crocs.fi.muni.cz/

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Configurations

Configuration 1 (hide)

cpe:2.3:a:cryptopp:crypto\+\+:*:*:*:*:*:*:*:*

Information

Published : 2019-07-30 10:15

Updated : 2019-08-20 11:15

NVD link : CVE-2019-14318

Mitre link : CVE-2019-14318

JSON object : View

CWE

CWE-417

Communication Channel Errors

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Products Affected

cryptopp

crypto\+\+

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