vulnwire
5.3med

CVE-2016-8635

It was found that Diffie Hellman Client key exchange handling in NSS 3.21.x was vulnerable to small subgroup confinement attack.

Published 8 y ago · modified 4 mo ago · JSON

CVSS
5.3
v3.0 · CNA
CISA KEV
No
not known exploited
EPSS
2.0%
percentile 81%
Public exploits
0
none known

It was found that Diffie Hellman Client key exchange handling in NSS 3.21.x was vulnerable to small subgroup confinement attack. An attacker could use this flaw to recover private keys by confining the client DH key to small subgroup of the desired group.

Exploit prediction (EPSS)

1.99% probability of exploitation in the next 30 days, higher than 81% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CNA3.05.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA3.05.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD3.05.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD2.04.3AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

  • Mozilla nss

Classification

Weakness
  • CWE-358 Improperly Implemented Security Check for Standard
  • CWE-320 Key Management Errors

References

  • bugzilla.redhat.com /show_bug.cgi?id=CVE-2016-8635 · x_refsource_CONFIRM, x_transferred
  • rhn.redhat.com /errata/RHSA-2016-2779.html · vendor-advisory, x_refsource_REDHAT, x_transferred
  • security.gentoo.org /glsa/201701-46 · vendor-advisory, x_refsource_GENTOO, x_transferred
  • securityfocus.com /bid/94346 · vdb-entry, x_refsource_BID, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.