CVE-2022-40617 Denial of service in n/a

What is CVE-2022-40617?

CVE-2022-40617 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 31 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.

Weakness: CWE-400

Which versions are affected by CVE-2022-40617?

It affects 5 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Stormshield Stormshield Network Security, Strongswan Strongswan.

How do I fix CVE-2022-40617?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-40617 being exploited?

There is no known exploitation of CVE-2022-40617 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2022-40617, AZL-11398, DEBIAN-CVE-2022-40617, DLA-3143-1, DSA-5249-1, GHSA-f2x8-4jwf-gqrg and 7 more.