CVE-2023-45290 Memory exhaustion in multipart form parsing in net/textproto and net/http
Attackers can cause memory exhaustion and denial of service by sending maliciously crafted multipart form data with very long lines to Go applications.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-45290?
CVE-2023-45290 is a medium-severity denial of service vulnerability in Go standard library net/textproto, published on 5 Mar 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
When parsing a multipart form (either explicitly with Request.ParseMultipartForm or implicitly with Request.FormValue, Request.PostFormValue, or Request.FormFile), limits on the total size of the parsed form were not applied to the memory consumed while reading a single form line. This permits a maliciously crafted input containing very long lines to cause allocation of arbitrarily large amounts of memory, potentially leading to memory exhaustion. With fix, the ParseMultipartForm function now correctly limits the maximum size of form lines.
Weakness: CWE-770
Which versions are affected by CVE-2023-45290?
2 open source packages ship an affected version, including golang and stdlib.
| Package | Affected | Fixed in |
|---|---|---|
golang Bitnami | All versions | 1.21.8, 1.22.1 |
stdlib Go | All versions | 1.21.8, 1.22.1 |
Linux distribution packages (9)
containernetworking-plugins AlmaLinux:9 | All versions | 1:1.4.0-3.el9_4 |
gvisor-tap-vsock AlmaLinux:9 | All versions | 6:0.7.3-3.el9_4.alma.1 |
containernetworking-plugins Red Hat:enterprise_linux:9::appstream | All versions | 1:1.4.0-3.el9_4 |
containernetworking-plugins-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 1:1.4.0-3.el9_4 |
containernetworking-plugins-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 1:1.4.0-3.el9_4 |
gvisor-tap-vsock Red Hat:enterprise_linux:9::appstream | All versions | 6:0.7.3-3.el9_4 |
gvisor-tap-vsock-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 6:0.7.3-3.el9_4 |
gvisor-tap-vsock-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 6:0.7.3-3.el9_4 |
gvisor-tap-vsock Rocky Linux:9 | All versions | 6:0.7.3-3.el9_4 |
How do I fix CVE-2023-45290?
Upgrade golang to a fixed version for your release line: 1.21.8 or 1.22.1.
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-2023-45290 being exploited?
There is no known exploitation of CVE-2023-45290 in the wild and no public exploit code.
Sources
Also known as ALSA-2024:3830, ALSA-2024:3831, AZL-37493, AZL-37504, AZL-79032, AZL-98844 and 12 more.