CVE-2022-41724 Panic on large handshake records in crypto/tls
Attackers can cause a denial of service by sending large TLS handshake records, affecting Go applications with specific TLS configurations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-41724?
CVE-2022-41724 is a high-severity denial of service vulnerability in Golang Go, published on 28 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Large handshake records may cause panics in crypto/tls. Both clients and servers may send large TLS handshake records which cause servers and clients, respectively, to panic when attempting to construct responses. This affects all TLS 1.3 clients, TLS 1.2 clients which explicitly enable session resumption (by setting Config.ClientSessionCache to a non-nil value), and TLS 1.3 servers which request client certificates (by setting Config.ClientAuth >= RequestClientCert).
Weakness: CWE-400
Which versions are affected by CVE-2022-41724?
2 open source packages ship an affected version, including golang and stdlib. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
golang Bitnami | All versions | 1.19.6, 1.20.1 |
stdlib Go | All versions | 1.19.6, 1.20.1 |
Linux distribution packages (6)
cri-o Red Hat:openshift:4.13::el8 | All versions | 0:1.26.3-6.rhaos4.13.gitb3475fb.el8 |
cri-o-debuginfo Red Hat:openshift:4.13::el8 | All versions | 0:1.26.3-6.rhaos4.13.gitb3475fb.el8 |
cri-o-debugsource Red Hat:openshift:4.13::el8 | All versions | 0:1.26.3-6.rhaos4.13.gitb3475fb.el8 |
cri-o Red Hat:openshift:4.13::el9 | All versions | 0:1.26.3-7.rhaos4.13.gitb3475fb.el9 |
cri-o-debuginfo Red Hat:openshift:4.13::el9 | All versions | 0:1.26.3-7.rhaos4.13.gitb3475fb.el9 |
cri-o-debugsource Red Hat:openshift:4.13::el9 | All versions | 0:1.26.3-7.rhaos4.13.gitb3475fb.el9 |
Products include Golang Go.
How do I fix CVE-2022-41724?
Upgrade golang to a fixed version for your release line: 1.19.6 or 1.20.1.
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-2022-41724 being exploited?
There is no known exploitation of CVE-2022-41724 in the wild and no public exploit code.
Other vulnerabilities in Golang Go
- CVE-2020-0601 Microsoft Windows CryptoAPI Spoofing
- CVE-2026-27143 Missing bound checks can lead to memory corruption in safe Go in cmd/compile
- CVE-2024-24790 Unexpected behavior from Is methods for IPv4-mapped IPv6 addresses in net/netip
- CVE-2023-39320 Arbitrary code execution via go.mod toolchain directive in cmd/go
- CVE-2023-24540 Improper handling of JavaScript whitespace in html/template
Sources
Also known as AZL-13731, AZL-13737, AZL-34755, AZL-37400, AZL-37508, AZL-78952 and 8 more.