Channel and Path Errors The advisory has been revoked - it doesn't affect any version of package libcrypto++ (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1904-LIBCRYPTO-529224
- published9 Aug 2019
- disclosed30 Jul 2019
Introduced: 30 Jul 2019
CVE-2019-14318 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:19.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libcrypto++ package and not the libcrypto++ package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-14318
- https://security-tracker.debian.org/tracker/CVE-2019-14318
- https://github.com/weidai11/cryptopp/issues/869
- https://eprint.iacr.org/2011/232.pdf
- https://minerva.crocs.fi.muni.cz/
- https://tches.iacr.org/index.php/TCHES/article/view/7337
- http://www.openwall.com/lists/oss-security/2019/10/02/2
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00066.html