CVEvulnerability

CVE-2019-1551

5.3 MEDIUM Published 2019-12-06 Modified 2026-10-08 Official page ↗
Status
Modified
Published
2019-12-06
Last modified
2026-10-08
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-190

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).

Affected configurations

• openssl openssl (>= 1.0.2 <= 1.0.2t) • openssl openssl (>= 1.1.1 <= 1.1.1d) • opensuse leap 15.1 • oracle enterprise manager ops center 12.4.0.0 • oracle mysql enterprise monitor (<= 4.0.12) • oracle mysql enterprise monitor (>= 8.0.0 <= 8.0.20) • oracle peoplesoft enterprise peopletools 8.56 • oracle peoplesoft enterprise peopletools 8.57 • oracle peoplesoft enterprise peopletools 8.58 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 19.10 • fedoraproject fedora 30 • fedoraproject fedora 31 • fedoraproject fedora 32 • debian debian linux 9.0 • debian debian linux 10.0 • tenable log correlation engine (< 6.0.9)

Related

Weakness · CWE (1)

  • CWE-190 Integer Overflow or Wraparound weakness

References