CVE-2018-16873
What it is
In Go before 1.10.6 and 1.11.x before 1.11.3, the "go get" command is vulnerable to remote code execution when executed with the -u flag and the import path of a malicious Go package, or a package that imports it directly or indirectly. Specifically, it is only vulnerable in GOPATH mode, but not in module mode (the distinction is documented at https://golang.org/cmd/go/#hdr-Module_aware_go_get). Using custom domains, it's possible to arrange things so that a Git repository is cloned to a folder named ".git" by using a vanity import path that ends with "/.git". If the Git repository root contains a "HEAD" file, a "config" file, an "objects" directory, a "refs" directory, with some work to ensure the proper ordering of operations, "go get -u" can be tricked into considering the parent directory as a repository root, and running Git commands on it. That will use the "config" file in the original Git repository root for its configuration, and if that config file contains malicious commands, they will execute on the system running "go get -u".
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 66.3% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 66.3% in the next 30 days (EPSS).
- Severity: 8.1 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 66.3% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Modified
Affected
- Golang Go < 1.10.6
- Golang Go < 1.11.3
- Opensuse Backports Sle 15.0
- Opensuse Leap 15.0
- Opensuse Leap 15.1
- Opensuse Leap 42.3
- Suse Linux Enterprise Server 12
- Debian Linux 9.0
Attack profile CVSS 3.1 · 8.1
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2018-16873.md and follow it. Check whether this project is affected by CVE-2018-16873. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
References
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00044.html
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00060.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00041.html
- http://www.securityfocus.com/bid/106226
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16873
- https://groups.google.com/forum/?pli=1#%21topic/golang-announce/Kw31K8G7Fi0
- https://lists.debian.org/debian-lts-announce/2021/03/msg00014.html
- https://lists.debian.org/debian-lts-announce/2021/03/msg00015.html
- https://security.gentoo.org/glsa/201812-09
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00044.html
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00060.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00041.html
- http://www.securityfocus.com/bid/106226
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16873
- https://groups.google.com/forum/?pli=1#%21topic/golang-announce/Kw31K8G7Fi0
- https://lists.debian.org/debian-lts-announce/2021/03/msg00014.html
- https://lists.debian.org/debian-lts-announce/2021/03/msg00015.html
- https://security.gentoo.org/glsa/201812-09