Announcing Istio 1.1.13
Istio 1.1.13 patch release.
We’re pleased to announce the availability of Istio 1.1.13. Please see below for what’s changed.
BEFORE YOU UPGRADE
Things to know and prepare before upgrading.
DOWNLOAD
Download and install this release.
DOCS
Visit the documentation for this release.
SOURCE CHANGES
Inspect the full set of source code changes.
Security update
This release contains fixes for the security vulnerabilities described in ISTIO-SECURITY-2019-003 and ISTIO-SECURITY-2019-004. Specifically:
ISTIO-SECURITY-2019-003: An Envoy user reported publicly an issue (c.f. Envoy Issue 7728) about regular expressions matching that crashes Envoy with very large URIs.
- CVE-2019-14993: After investigation, the Istio team has found that this issue could be leveraged for a DoS attack in Istio, if users are employing regular expressions in some of the Istio APIs:
JWT,VirtualService,HTTPAPISpecBinding,QuotaSpecBinding.
ISTIO-SECURITY-2019-004: Envoy, and subsequently Istio are vulnerable to a series of trivial HTTP/2-based DoS attacks:
- CVE-2019-9512: HTTP/2 flood using
PINGframes and queuing of responsePINGACK frames that results in unbounded memory growth (which can lead to out of memory conditions). - CVE-2019-9513: HTTP/2 flood using PRIORITY frames that results in excessive CPU usage and starvation of other clients.
- CVE-2019-9514: HTTP/2 flood using
HEADERSframes with invalid HTTP headers and queuing of responseRST_STREAMframes that results in unbounded memory growth (which can lead to out of memory conditions). - CVE-2019-9515: HTTP/2 flood using
SETTINGSframes and queuing ofSETTINGSACK frames that results in unbounded memory growth (which can lead to out of memory conditions). - CVE-2019-9518: HTTP/2 flood using frames with an empty payload that results in excessive CPU usage and starvation of other clients.
Nothing else is included in this release except for the above security fixes.