UBUNTU-CVE-2015-3193

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2015-3193
Downstream
USN-2830-1
Published: 03 Dec 2015, 00:00
Last modified:04 Feb 2026, 02:39

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Dec 2015, 00:00
Published
Vulnerability first disclosed
04 Feb 2026, 02:39
Last Modified
Vulnerability information updated

Description

The Montgomery squaring implementation in crypto/bn/asm/x86_64-mont5.pl in OpenSSL 1.0.2 before 1.0.2e on the x86_64 platform, as used by the BN_mod_exp function, mishandles carry propagation and produces incorrect output, which makes it easier for remote attackers to obtain sensitive private-key information via an attack against use of a (1) Diffie-Hellman (DH) or (2) Diffie-Hellman Ephemeral (DHE) ciphersuite.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Systems

  • ubuntu•openssl

    < 1.0.1f-1ubuntu2.15

References (4)