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cveOpensslCVE-2019-1551
HistoryDec 06, 2019 - 6:15 p.m.

CVE-2019-1551

2019-12-0618:15:12
CWE-190
openssl
web.nvd.nist.gov
463
5
cve-2019-1551
overflow bug
x64_64
montgomery squaring
exponentiation
512-bit moduli
openssl
ec algorithms
rsa
dsa
dh512
security vulnerability

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.8

Confidence

High

EPSS

0.002

Percentile

60.0%

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).

Affected configurations

Nvd
Node
opensslopensslRange1.0.21.0.2t
OR
opensslopensslRange1.1.11.1.1d
Node
opensuseleapMatch15.1
Node
oracleenterprise_manager_ops_centerMatch12.4.0.0
OR
oraclemysql_enterprise_monitorRange4.0.12
OR
oraclemysql_enterprise_monitorRange8.0.08.0.20
OR
oraclepeoplesoft_enterprise_peopletoolsMatch8.56
OR
oraclepeoplesoft_enterprise_peopletoolsMatch8.57
OR
oraclepeoplesoft_enterprise_peopletoolsMatch8.58
Node
canonicalubuntu_linuxMatch16.04lts
OR
canonicalubuntu_linuxMatch18.04lts
OR
canonicalubuntu_linuxMatch19.10
Node
fedoraprojectfedoraMatch30
OR
fedoraprojectfedoraMatch31
OR
fedoraprojectfedoraMatch32
Node
debiandebian_linuxMatch9.0
OR
debiandebian_linuxMatch10.0
Node
tenablelog_correlation_engineRange<6.0.9
VendorProductVersionCPE
opensslopenssl*cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
opensuseleap15.1cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
oracleenterprise_manager_ops_center12.4.0.0cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*
oraclemysql_enterprise_monitor*cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*
oraclepeoplesoft_enterprise_peopletools8.56cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.56:*:*:*:*:*:*:*
oraclepeoplesoft_enterprise_peopletools8.57cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*
oraclepeoplesoft_enterprise_peopletools8.58cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*
canonicalubuntu_linux16.04cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonicalubuntu_linux18.04cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonicalubuntu_linux19.10cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
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CNA Affected

[
  {
    "product": "OpenSSL",
    "vendor": "OpenSSL",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d)"
      },
      {
        "status": "affected",
        "version": "Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t)"
      }
    ]
  }
]

References

Social References

More

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.8

Confidence

High

EPSS

0.002

Percentile

60.0%