Fixes the following security vulnerabilities:
containerd 1.2.9/gRPC:
- CVE-2019-9512: Some HTTP/2 implementations are vulnerable to ping floods,
potentially leading to a denial of service. The attacker sends continual
pings to an HTTP/2 peer, causing the peer to build an internal queue of
responses. Depending on how efficiently this data is queued, this can
consume excess CPU, memory, or both
- CVE-2019-9514: Some HTTP/2 implementations are vulnerable to a reset
flood, potentially leading to a denial of service. The attacker opens a
number of streams and sends an invalid request over each stream that
should solicit a stream of RST_STREAM frames from the peer. Depending on
how the peer queues the RST_STREAM frames, this can consume excess memory,
CPU, or both
- CVE-2019-9515: Some HTTP/2 implementations are vulnerable to a settings
flood, potentially leading to a denial of service. The attacker sends a
stream of SETTINGS frames to the peer. Since the RFC requires that the
peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS
frame is almost equivalent in behavior to a ping. Depending on how
efficiently this data is queued, this can consume excess CPU, memory, or
both
containerd 1.2.10/runc:
- CVE-2019-16884: runc through 1.0.0-rc8, as used in Docker through
19.03.2-ce and other products, allows AppArmor restriction bypass because
libcontainer/rootfs_linux.go incorrectly checks mount targets, and thus a
malicious Docker image can mount over a /proc director
Signed-off-by: Christian Stewart <christian@paral.in>
[Peter: mention security impact]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
f40f2bae81