CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
AI Score
Confidence
Low
EPSS
Percentile
70.7%
Karthikeyan Bhargavan discovered that NSS incorrectly handled state
transitions for the TLS state machine. If a remote attacker were able to
perform a machine-in-the-middle attack, this flaw could be exploited to skip
the ServerKeyExchange message and remove the forward-secrecy property.
(CVE-2015-2721)
Watson Ladd discovered that NSS incorrectly handled Elliptical Curve
Cryptography (ECC) multiplication. A remote attacker could possibly use
this issue to spoof ECDSA signatures. (CVE-2015-2730)
As a security improvement, this update modifies NSS behaviour to reject DH
key sizes below 768 bits, preventing a possible downgrade attack.
This update also refreshes the NSS package to version 3.19.2 which includes
the latest CA certificate bundle.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Ubuntu | 15.04 | noarch | libnss3 | < 2:3.19.2-0ubuntu15.04.1 | UNKNOWN |
Ubuntu | 15.04 | noarch | libnss3-1d | < 2:3.19.2-0ubuntu15.04.1 | UNKNOWN |
Ubuntu | 15.04 | noarch | libnss3-dbg | < 2:3.19.2-0ubuntu15.04.1 | UNKNOWN |
Ubuntu | 15.04 | noarch | libnss3-dbgsym | < 2:3.19.2-0ubuntu15.04.1 | UNKNOWN |
Ubuntu | 15.04 | noarch | libnss3-dev | < 2:3.19.2-0ubuntu15.04.1 | UNKNOWN |
Ubuntu | 15.04 | noarch | libnss3-nssdb | < 2:3.19.2-0ubuntu15.04.1 | UNKNOWN |
Ubuntu | 15.04 | noarch | libnss3-tools | < 2:3.19.2-0ubuntu15.04.1 | UNKNOWN |
Ubuntu | 15.04 | noarch | libnss3-tools-dbgsym | < 2:3.19.2-0ubuntu15.04.1 | UNKNOWN |
Ubuntu | 14.10 | noarch | libnss3 | < 2:3.19.2-0ubuntu0.14.10.1 | UNKNOWN |
Ubuntu | 14.10 | noarch | libnss3-1d | < 2:3.19.2-0ubuntu0.14.10.1 | UNKNOWN |