Debian Security Bug TrackerDEBIANCVE:CVE-2015-2721CVE-2015-2721
4.3 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.001 Low
EPSS
Percentile
48.7%
Mozilla Network Security Services (NSS) before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle attackers to defeat cryptographic protection mechanisms by blocking messages, as demonstrated by removing a forward-secrecy property by blocking a ServerKeyExchange message, aka a “SMACK SKIP-TLS” issue.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | nss | < 2:3.19.1-1 | nss_2:3.19.1-1_all.deb |
| Debian | 11 | all | nss | < 2:3.19.1-1 | nss_2:3.19.1-1_all.deb |
| Debian | 10 | all | nss | < 2:3.19.1-1 | nss_2:3.19.1-1_all.deb |
| Debian | 999 | all | nss | < 2:3.19.1-1 | nss_2:3.19.1-1_all.deb |
| Debian | 13 | all | nss | < 2:3.19.1-1 | nss_2:3.19.1-1_all.deb |
Related
4.3 Medium
CVSS2
Access Vector
NETWORK
Access 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
0.001 Low
EPSS
Percentile
48.7%