MGASA-2020-0023

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2019-1551
Published: 05 Jan 2020, 15:37
Last modified:16 Apr 2026, 04:26

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Jan 2020, 15:37
Published
Vulnerability first disclosed
16 Apr 2026, 04:26
Last Modified
Vulnerability information updated

Description

Updated openssl packages fix security vulnerability Updated compat-openssl10 and openssl packages fix security vulnerability: There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME (CVE-2019-1551).

Affected Systems

  • mageia•compat-openssl10

    < 1.0.2u-1.mga7

  • mageia•openssl

    < 1.1.0l-1.1.mga7

References (3)