JWT audience claim is not verified
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.3.13, 2.4.19, 2.5.6, 2.6.0-rc3, 2.3.14, and 3 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Versions of Argo CD starting with v1.8.2 and prior to 2.3.13, 2.4.19, 2.5.6, and 2.6.0-rc-3 are vulnerable to an improper authorization bug causing the API to accept certain invalid tokens. OIDC providers include an `aud` (audience) claim in signed tokens. The value of that claim specifies the intended audience(s) of the token (i.e. the service or services which are meant to accept the token). Argo CD does validate that the token was signed by Argo CD's configured OIDC provider. But Argo CD does not validate the audience claim, so it will accept tokens that are not intended for Argo CD. If Argo CD's configured OIDC provider also serves other audiences (for example, a file storage service), then Argo CD will accept a token intended for one of those other audiences. Argo CD will grant the user privileges based on the token's `groups` claim, even though those groups were not intended to be used by Argo CD. This bug also increases the impact of a stolen token. If an attacker steals a valid token for a different audience, they can use it to access Argo CD. A patch for this vulnerability has been released in versions 2.6.0-rc3, 2.5.6, 2.4.19, and 2.3.13. There are no workarounds.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- argoproj argo-cd
From 1.8.2 · fixed in 2.3.13; From 2.4.0-rc1 · fixed in 2.4.19; From 2.5.0-rc1 · fixed in 2.5.6; From 2.6.0-rc1 · fixed in 2.6.0-rc3
- github.com/argoproj/argo-cdGo
From 1.8.2 · fixed in 2.3.14
- github.com/argoproj/argo-cdGo
From 2.4.0 · fixed in 2.4.20
- github.com/argoproj/argo-cdGo
From 2.5.0 · fixed in 2.5.8
- github.com/argoproj/argo-cdGo
From 2.6.0-rc1 · fixed in 2.6.0-rc5
- github.com/argoproj/argo-cdGo
From 1.8.2
- github.com/argoproj/argo-cd/v2Go
fixed in 2.3.14; From 2.4.0 · fixed in 2.4.20; From 2.5.0 · fixed in 2.5.8; From 2.6.0-rc1 · fixed in 2.6.0-rc5