CVE-2019-1551

Advisory lineage Upstream: 0 Downstream: 20
Modified
Published: 06 Dec 2019, 17:20
Last modified:16 Sept 2024, 19:40

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.3 MEDIUM
v3.1 (nvd)
EPSS Score
2.8% LOW
3% probability -1.07%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

06 Dec 2019, 17:20
Published
Vulnerability first disclosed
16 Sept 2024, 19:40
Last Modified
Vulnerability information updated

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).

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 2.80%• Percentile: 86%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • canonical•ubuntu_linux

    16.04 | 18.04 | 19.10

  • debian•debian_linux

    9.0 | 10.0

  • fedoraproject•fedora

    30 | 31 | 32

  • Unknown•OpenSSL

    ≥ 1.0.2, ≤ 1.0.2t | ≥ 1.1.1, ≤ 1.1.1d | 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)

  • opensuse•leap

    15.1

  • oracle•enterprise_manager_ops_center

    12.4.0.0

  • oracle•mysql_enterprise_monitor

    ≤ 4.0.12 | ≥ 8.0.0, ≤ 8.0.20

  • oracle•peoplesoft_enterprise_peopletools

    8.56 | 8.57 | 8.58

  • tenable•log_correlation_engine

    < 6.0.9

References (24)