CVE-2022-30633 Stack exhaustion when unmarshaling certain documents in encoding/xml
An attacker can cause a panic and denial of service by sending a crafted XML document to applications using the Go encoding/xml package.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-30633?
CVE-2022-30633 is a high-severity denial of service vulnerability in Golang Go, published on 9 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Uncontrolled recursion in Unmarshal in encoding/xml before Go 1.17.12 and Go 1.18.4 allows an attacker to cause a panic due to stack exhaustion via unmarshalling an XML document into a Go struct which has a nested field that uses the 'any' field tag.
Weakness: CWE-674
Which versions are affected by CVE-2022-30633?
2 open source packages ship an affected version, including golang and stdlib. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
golang Bitnami | All versions | 1.17.12, 1.18.4 |
stdlib Go | All versions | 1.17.12, 1.18.4 |
Products include Golang Go.
How do I fix CVE-2022-30633?
Upgrade golang to a fixed version for your release line: 1.17.12 or 1.18.4.
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-2022-30633 being exploited?
There is no known exploitation of CVE-2022-30633 in the wild and no public exploit code.
Other vulnerabilities in Golang Go
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- 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-10536, AZL-79040, AZL-98961, BIT-golang-2022-30633, DEBIAN-CVE-2022-30633, GHSA-r9vw-mppf-3883 and 2 more.