GHSA-35vc-w93w-75c2
Suggest an improvement- Source
- https://github.com/advisories/GHSA-35vc-w93w-75c2
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/05/GHSA-35vc-w93w-75c2/GHSA-35vc-w93w-75c2.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-35vc-w93w-75c2
- Aliases
- Published
- 2021-05-21T16:24:34Z
- Modified
- 2024-08-21T15:58:36.860228Z
- Severity
-
- 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N CVSS Calculator
- Summary
- JWT leak via Open Redirect in Programmatic access
- Details
-
Impact
Using programmatic access on protected sites, one can get a signed login URL with pomeriumredirecturi set to an arbitrary URL. Then, if the user has already logged into Pomerium, they will be redirected to the specified pomeriumredirecturi with a JWT attached. This allows an outside attacker to get a signed login URL that, upon visiting it, will redirect a victim to the attacker’s site. This creates an issue of Open Redirect and, more seriously, JWT leakage.
With a leaked JWT, the attacker will be able to unveil the victim’s identity (.e.g. email address) by supplying the JWT to the authenticate service or verify.pomerium.com. In addition, if an application integrating Pomerium only verifies the iss claim and others but not the aud claim, the attacker will be able to access it as the victim.
Specific Go Packages Affected
github.com/pomerium/pomerium/proxy
Patches
Patched in Pomerium v0.13.4
For more information
If you have any questions or comments about this advisory * Open an issue in pomerium * Email us at security@pomerium.com
- Database specific
{ "nvd_published_at": null, "cwe_ids": [ "CWE-200", "CWE-601" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2021-05-20T20:25:40Z" }- References
Affected packages
Go / github.com/pomerium/pomerium
Package
- Name
- github.com/pomerium/pomerium
- View open source insights on deps.dev
- Purl
- pkg:golang/github.com/pomerium/pomerium