MGASA-2020-0053: mbedtls Mageia

CVSS: UnknownPublished
Published 28-01-2020Last modified 16-04-2026
Open JSON

Vulnerability summary

MGASA-2020-0053 is a vulnerability in mbedtls Mageia with no CVSS score yet.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
Not scored
0%100%
No EPSS score yet
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 2 · Downstream 0
CVE-2019-16910CVE-2019-18222

Timeline

  1. 28-01-2020
    PublishedVulnerability first disclosed.
  2. 16-04-2026
    Last modifiedVulnerability information updated.

Description

Updated mbedtls packages fix security vulnerabilities This update from mbedTLS 2.16.2 to mbedTLS 2.16.4 fixes several security vulnerabilities, among which: The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to implement blinding. Because of this for the same key and message the same blinding value was generated. This reduced the effectiveness of the countermeasure and leaked information about the private key through side channels (CVE-2019-16910). Fix side channel vulnerability in ECDSA. Our bignum implementation is not constant time/constant trace, so side channel attacks can retrieve the blinded value, factor it (as it is smaller than RSA keys and not guaranteed to have only large prime factors), and then, by brute force, recover the key (CVE-2019-18222). See release notes for details.

CVSS metrics

Risk metrics not yet published.

EPSS trend

No EPSS score has been published for this record yet.

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Mageia1 product
  • mbedtls< 2.16.4-1.mga7

1 vendor · 1 product

References

6 links