CVE-2020-7692 — PKCE support is not implemented in accordance with the RFC for OAuth 2
PKCE support is not implemented in accordance with the RFC for OAuth 2.0 for Native Apps. Without the use of PKCE, the authorization code returned by an authorization server is not enough to guarantee that the client that issued the initial authorization request is the one that w
Published
2020-07-09T13:20:16.446Z
Last modified
2024-09-17T03:47:55.563Z
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
01What is this vulnerability?
PKCE support is not implemented in accordance with the RFC for OAuth 2.0 for Native Apps. Without the use of PKCE, the authorization code returned by an authorization server is not enough to guarantee that the client that issued the initial authorization request is the one that will be authorized. An attacker is able to obtain the authorization code using a malicious app on the client-side and…
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / com.google.oauth | client:google-oauth-client — unspecified |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2020-07-09T13:20:16.446Z
- Last modified: 2024-09-17T03:47:55.563Z
09References
- snyk.io — https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEOAUTHCLIENT-575276
- github.com — https://github.com/googleapis/google-oauth-java-client/issues/469
- github.com — https://github.com/googleapis/google-oauth-java-client/commit/13433cd7dd06267fc2…
- tools.ietf.org — https://tools.ietf.org/html/rfc8252%23section-8.1
- tools.ietf.org — https://tools.ietf.org/html/rfc7636%23section-1
- lists.apache.org — https://lists.apache.org/thread.html/r3db6ac73e0558d64f0b664f2fa4ef0a865e57c5de2…
- lists.apache.org — https://lists.apache.org/thread.html/reae8909b264d1103f321b9ce1623c10c1ddc77dba9…
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