It was found that the RFC 5961 challenge ACK rate limiting as implemented in the Linux kernel's networking subsystem allowed an off-path attacker to leak certain information about a given connection by creating congestion on the global challenge ACK rate limit counter and then measuring the changes by probing packets. An off-path attacker could use this flaw to either terminate TCP connection and/or inject payload into non-secured TCP connection between two endpoints on the network.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 1 | kernel | 2016-08-01 13:30 | ALAS-2016-726 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv2 | 5.8 | AV:N/AC:M/Au:N/C:N/I:P/A:P |
Amazon Linux | CVSSv3 | 4.8 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L |
NVD | CVSSv2 | 5.8 | AV:N/AC:M/Au:N/C:N/I:P/A:P |
NVD | CVSSv3 | 4.8 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L |