Information Exposure Affecting wolfssl package, versions <4.1.0+dfsg-1
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-WOLFSSL-471674
- published 3 Oct 2019
- disclosed 3 Oct 2019
Introduced: 3 Oct 2019
CVE-2019-13628 Open this link in a new tabHow to fix?
Upgrade Debian:unstable wolfssl to version 4.1.0+dfsg-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream wolfssl package and not the wolfssl package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.