CVE-2020-26294 Exposure of server configuration
An attacker can retrieve sensitive server configuration information via the Sprig env function in the Vela CI/CD compiler.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-26294?
CVE-2020-26294 is a high-severity vulnerability in go-vela compiler, published on 4 Jan 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Vela is a Pipeline Automation (CI/CD) framework built on Linux container technology written in Golang. In Vela compiler before version 0.6.1 there is a vulnerability which allows exposure of server configuration. It impacts all users of Vela. An attacker can use Sprig's `env` function to retrieve configuration information, see referenced GHSA for an example. This has been fixed in version 0.6.1. In addition to upgrading, it is recommended to rotate all secrets.
Weakness: CWE-78
Which versions are affected by CVE-2020-26294?
3 open source packages ship an affected version, including github.com/go-vela/compiler. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/go-vela/compiler Go | All versions | 0.6.1 |
github.com/go-vela/compiler Go | All versions | 0.6.1 |
github.com/go-vela/compiler Go | All versions | 0.6.1 |
Products include Target Compiler.
How do I fix CVE-2020-26294?
Upgrade github.com/go-vela/compiler to 0.6.1 or later.
Is CVE-2020-26294 being exploited?
There is no known exploitation of CVE-2020-26294 in the wild and no public exploit code.
Sources
Also known as GHSA-gv2h-gf8m-r68j, GO-2022-0838.