Denial of service in Istio

1) Out-of-bounds read

EUVDB-ID: #VU64153

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-31045

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within the Ill-formed headers. A remote attacker can trigger out-of-bounds read error and cause a denial of service condition on the system.

Mitigation

Install updates from vendor's website.

Note, the 1.14.2 or 1.13.6 versions are affected by this vulnerability due to process issues on the vendor's side.

Vulnerable software versions

Istio: 0.1 - 1.14.2

CPE2.3

• cpe:2.3:a:istio:istio:0.1.6:*:*:*:*:*:*:*
• cpe:2.3:a:istio:istio:0.2.12:*:*:*:*:*:*:*
• cpe:2.3:a:istio:istio:0.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:istio:istio:0.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:istio:istio:0.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:istio:istio:0.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:istio:istio:0.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:istio:istio:0.8.0:*:*:*:*:*:*:*
• cpe:2.3:a:istio:istio:1.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:istio:istio:1.14.2:*:*:*:*:*:*:*

External links

https://github.com/istio/istio/security/advisories/GHSA-xwx5-5c9g-x68x
https://istio.io/latest/news/security/istio-security-2022-05
https://istio.io/latest/news/security/istio-security-2022-006

Q & A

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.