Vulnerability identifier: #VU35637
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Istio
Web applications /
Other software
Vendor: Istio
Description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Istio before 1.1.13 and 1.2.x before 1.2.4 mishandles regular expressions for long URIs, leading to a denial of service during use of the JWT, VirtualService, HTTPAPISpecBinding, or QuotaSpecBinding API.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Istio: 1.2.1 - 1.2.3
External links
http://discuss.istio.io/t/upcoming-security-updates-in-istio-1-2-4-and-1-1-13/3383
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=86164
http://github.com/envoyproxy/envoy/issues/7728
http://istio.io/blog/2019/istio-security-003-004/
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.