CVE-2019-13629 Information disclosure in n/a
Attackers can recover private keys by measuring timing variations in ECDSA signature generation within the MatrixSSL library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-13629?
CVE-2019-13629 is a medium-severity vulnerability in n/a, published on 3 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
MatrixSSL 4.2.1 and earlier contains a timing side channel in ECDSA signature generation. This allows a local or a remote attacker, able to measure the duration of hundreds to thousands of signing operations, to compute the private key used. The issue occurs because crypto/pubkey/ecc_math.c scalar multiplication leaks the bit length of the scalar.
Which versions are affected by CVE-2019-13629?
It affects 1 product.
Products include Matrixssl Matrixssl.
How do I fix CVE-2019-13629?
No fix has been published for CVE-2019-13629 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-13629 being exploited?
There is no known exploitation of CVE-2019-13629 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-p73v-qh88-fqc2.