DEBIAN-CVE-2015-4000

Advisory lineage Upstream: 1 Downstream: 9
Upstream
CVE-2015-4000
Published: 21 May 2015, 00:59
Last modified:28 Apr 2026, 20:14

Vulnerability Summary

Overall Risk (default)
low
15/100
CVSS Score
3.7 LOW
3.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

21 May 2015, 00:59
Published
Vulnerability first disclosed
28 Apr 2026, 20:14
Last Modified
Vulnerability information updated

Description

The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.

CVSS Metrics

  • v3.0•LOW•Score: 3.7CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Systems

  • debian•nss

    < 2:3.19.1-1 | < 2:3.19.1-1 | < 2:3.19.1-1 | < 2:3.19.1-1

  • debian•openssl

    < 1.0.2b-1 | < 1.0.2b-1 | < 1.0.2b-1 | < 1.0.2b-1

References (1)