CVE-2022-2879 Unbounded memory consumption when reading headers in archive/tar
Attackers can cause resource exhaustion or panics in Go applications by providing maliciously crafted tar archives with oversized headers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-2879?
CVE-2022-2879 is a high-severity denial of service vulnerability in Golang Go, published on 14 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Reader.Read does not set a limit on the maximum size of file headers. A maliciously crafted archive could cause Read to allocate unbounded amounts of memory, potentially causing resource exhaustion or panics. After fix, Reader.Read limits the maximum size of header blocks to 1 MiB.
Weakness: CWE-770
Which versions are affected by CVE-2022-2879?
2 open source packages ship an affected version, including golang and stdlib. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
golang Bitnami | All versions | 1.18.7, 1.19.2 |
stdlib Go | All versions | 1.18.7, 1.19.2 |
Linux distribution packages (1)
docker-compose openSUSE:Tumbleweed | All versions | 2.12.0-1.1 |
Products include Golang Go.
How do I fix CVE-2022-2879?
Upgrade golang to a fixed version for your release line: 1.18.7 or 1.19.2.
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-2022-2879 being exploited?
There is no known exploitation of CVE-2022-2879 in the wild and no public exploit code.
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Sources
Also known as AZL-11128, AZL-37526, AZL-41393, AZL-41765, AZL-41786, AZL-41787 and 12 more.