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CVE-2019-1551

MEDIUM
5.3

Description

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).

CVE Details

CVSS v3.1 Score5.3
SeverityMEDIUM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
Published12/6/2019
Last Modified11/21/2024
Sourcenvd
Honeypot Sightings0

Affected Products

canonical:ubuntu_linuxdebian:debian_linuxfedoraproject:fedoraopenssl:opensslopensuse:leaporacle:enterprise_manager_ops_centeroracle:mysql_enterprise_monitororacle:peoplesoft_enterprise_peopletoolstenable:log_correlation_engine

Weaknesses (CWE)

CWE-190

References

https://seclists.org/bugtraq/2019/Dec/39(openssl-security@openssl.org)
https://seclists.org/bugtraq/2019/Dec/46(openssl-security@openssl.org)
https://security.gentoo.org/glsa/202004-10(openssl-security@openssl.org)
https://usn.ubuntu.com/4376-1/(openssl-security@openssl.org)
https://usn.ubuntu.com/4504-1/(openssl-security@openssl.org)
https://www.debian.org/security/2019/dsa-4594(openssl-security@openssl.org)
https://www.debian.org/security/2021/dsa-4855(openssl-security@openssl.org)
https://www.tenable.com/security/tns-2019-09(openssl-security@openssl.org)
https://www.tenable.com/security/tns-2020-03(openssl-security@openssl.org)
https://www.tenable.com/security/tns-2020-11(openssl-security@openssl.org)
https://www.tenable.com/security/tns-2021-10(openssl-security@openssl.org)
https://seclists.org/bugtraq/2019/Dec/39(af854a3a-2127-422b-91ae-364da2661108)
https://seclists.org/bugtraq/2019/Dec/46(af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202004-10(af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20191210-0001/(af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4376-1/(af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4504-1/(af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2019/dsa-4594(af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4855(af854a3a-2127-422b-91ae-364da2661108)
https://www.openssl.org/news/secadv/20191206.txt(af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpuApr2021.html(af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpujan2021.html(af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpujul2020.html(af854a3a-2127-422b-91ae-364da2661108)
https://www.tenable.com/security/tns-2019-09(af854a3a-2127-422b-91ae-364da2661108)
https://www.tenable.com/security/tns-2020-03(af854a3a-2127-422b-91ae-364da2661108)
https://www.tenable.com/security/tns-2020-11(af854a3a-2127-422b-91ae-364da2661108)
https://www.tenable.com/security/tns-2021-10(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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