Vulnerability in Cryptopp Crypto\+\+
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.027 (85.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- eprint.iacr.org/2011/232.pdf (Exploit, Third Party Advisory)
- tches.iacr.org/index.php/TCHES/article/view/7337 (Third Party Advisory)
- github.com/weidai11/cryptopp/issues/869 (Patch, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-08/msg00066.html (vendor-advisory)
- www.openwall.com/lists/oss-security/2019/10/02/2 (mailing-list)
- minerva.crocs.fi.muni.cz/
Frequently asked questions
- What is CVE-2019-14318?
- CVE-2019-14318 is a medium-severity vulnerability in Cryptopp Crypto\+\+, classified under CWE-417. CVSS score: 5.9/10. Published 2019-07-30.
- How severe is CVE-2019-14318?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2019-14318 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.