← All CVEs

CVE-2019-1551

medium · 5.3

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. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).

5.3
CVSS
14.3%
EPSS (exploit prob.)
96th
EPSS percentile
2019-12-06
Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weaknesses

CWE-190

Affected products

VendorProductAffected versions
opensslopenssl>= 1.0.2, <= 1.0.2t
opensslopenssl>= 1.1.1, <= 1.1.1d
opensuseleap15.1
oracleenterprise_manager_ops_center12.4.0.0
oraclemysql_enterprise_monitor<= 4.0.12
oraclemysql_enterprise_monitor>= 8.0.0, <= 8.0.20
oraclepeoplesoft_enterprise_peopletools8.56
oraclepeoplesoft_enterprise_peopletools8.57
oraclepeoplesoft_enterprise_peopletools8.58
canonicalubuntu_linux16.04
canonicalubuntu_linux18.04
canonicalubuntu_linux19.10
fedoraprojectfedora30
fedoraprojectfedora31
fedoraprojectfedora32
debiandebian_linux9.0
debiandebian_linux10.0
tenablelog_correlation_engine< 6.0.9

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2019-1551