Vulnerability Details : CVE-2019-13628
wolfSSL and wolfCrypt 4.0.0 and earlier (when configured without --enable-fpecc, --enable-sp, or --enable-sp-math) contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to precisely measure the duration of signature operations, to infer information about the nonces used and potentially mount a lattice attack to recover the private key used. The issue occurs because ecc.c scalar multiplication might leak the bit length.
Products affected by CVE-2019-13628
- cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-13628
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-13628
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
1.2
|
LOW | AV:L/AC:H/Au:N/C:P/I:N/A:N |
1.9
|
2.9
|
NIST | |
|
4.7
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
1.0
|
3.6
|
NIST |
CWE ids for CVE-2019-13628
-
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-13628
-
http://www.openwall.com/lists/oss-security/2019/10/02/2
oss-security - Minerva: ECDSA key recovery from bit-length leakageMailing List;Third Party Advisory
-
https://eprint.iacr.org/2011/232.pdf
Technical Description;Third Party Advisory
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https://tches.iacr.org/index.php/TCHES/article/view/7337
Return of the Hidden Number Problem. | IACR Transactions on Cryptographic Hardware and Embedded SystemsTechnical Description;Third Party Advisory
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https://minerva.crocs.fi.muni.cz/
Minerva: The curse of ECDSA noncesProduct
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