#auth

Cybersecurity researchers have disclosed details of two new Android malware families dubbed FvncBot and SeedSnatcher, as another upgraded version of ClayRat has been spotted in the wild. The findings come from Intel 471, CYFIRMA, and Zimperium, respectively. FvncBot, which masquerades as a security app developed by mBank, targets mobile banking users in Poland. What's notable about the malware

A critical security flaw in the Sneeit Framework plugin for WordPress is being actively exploited in the wild, per data from Wordfence. The remote code execution vulnerability in question is CVE-2025-6389 (CVSS score: 9.8), which affects all versions of the plugin prior to and including 8.3. It has been patched in version 8.4, released on August 5, 2025. The plugin has more than 1,700 active

A list of topics we covered in the week of December 1 to December 7 of 2025

A sprawling academic cheating network turbocharged by Google Ads that has generated nearly $25 million in revenue has curious connections to a Kremlin-connected oligarch whose Russian university builds drones for Russia's war against Ukraine.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday formally added a critical security flaw impacting React Server Components (RSC) to its Known Exploited Vulnerabilities (KEV) catalog following reports of active exploitation in the wild. The vulnerability, CVE-2025-55182 (CVSS score: 10.0), relates to a case of remote code execution that could be triggered by an

### Impact In some situations, Strimzi creates an incorrect Kubernetes `Role` which grants the Apache Kafka Connect and Apache Kafka MirrorMaker 2 operands the `GET` access to all Kubernetes Secrets that exist in the given Kubernetes namespace. The exact scenario when this happens is when: * Apache Kafka Connect is deployed without at least one of the following options configured: * TLS encryption with configured trusted certificates (no `.spec.tls.trustedCertificates` section in the `KafkaConnect` CR) * mTLS authentication (no `type: tls` in `.spec.authentication` section of the `KafkaConnect` CR) * TLS encryption with configured trusted certificates for `type: oauth` authentication (no `.spec.authentication.tlsTrustedCertificates` section in the `KafkaConnect` CR) * Apache Kafka MirrorMaker2 is deployed without at least one of the following options configured for the target cluster: * TLS encryption with configured trusted certificates (no `.spec.target.tls.trustedCe...

### Impact **Excessive memory allocation** Function [api.ParseJSONRequest](https://github.com/sigstore/timestamp-authority/blob/26d7d426d3000abdbdf2df34de56bb92246c0365/pkg/api/timestamp.go#L63) currently splits (via a call to [strings.Split](https://pkg.go.dev/strings#Split)) an optionally-provided OID (which is untrusted data) on periods. Similarly, function [api.getContentType](https://github.com/sigstore/timestamp-authority/blob/26d7d426d3000abdbdf2df34de56bb92246c0365/pkg/api/timestamp.go#L114) splits the `Content-Type` header (which is also untrusted data) on an `application` string. As a result, in the face of a malicious request with either an excessively long OID in the payload containing many period characters or a malformed `Content-Type` header, a call to `api.ParseJSONRequest` or `api.getContentType` incurs allocations of O(n) bytes (where n stands for the length of the function's argument). Relevant weakness: [CWE-405: Asymmetric Resource Consumption (Amplification)](h...

Function [identity.extractIssuerURL](https://github.com/sigstore/fulcio/blob/main/pkg/identity/issuerpool.go#L44-L45) currently splits (via a call to [strings.Split](https://pkg.go.dev/strings#Split)) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request with an (invalid) OIDC identity token in the payload containing many period characters, a call to `extractIssuerURL` incurs allocations to the tune of O(n) bytes (where n stands for the length of the function's argument), with a constant factor of about 16. Relevant weakness: [CWE-405: Asymmetric Resource Consumption (Amplification)](https://cwe.mitre.org/data/definitions/405.html) Details See [identity.extractIssuerURL](https://github.com/sigstore/fulcio/blob/main/pkg/identity/issuerpool.go#L44-L45) Impact Excessive memory allocation

### Summary Envoy’s mTLS certificate matcher for `match_typed_subject_alt_names` may incorrectly treat certificates containing an embedded null byte (\0) inside an `OTHERNAME` SAN value as valid matches. ### Details This occurs when the SAN is encoded as a `BMPSTRING` or `UNIVERSALSTRING`, and its UTF-8 conversion result is truncated at the first null byte during string assignment. As a result, `"victim\0evil"` may match an exact: `"victim"` rule and be accepted by Envoy. ### PoC Create a CA and a server certificate signed by that CA. Create two client certificates signed by the same CA: client_evil with OTHERNAME BMPSTRING = "evil" client_null with OTHERNAME BMPSTRING = "victim\0evil" Configure Envoy with require_client_certificate: true and a match_typed_subject_alt_names entry for the OTHERNAME OID with matcher.exact: "victim". Connect without a client cert → connection rejected. Connect with client_evil → connection rejected. Connect with client_null → connection accepted (but s...

### Summary Envoy crashes when JWT authentication is configured with the remote JWKS fetching, `allow_missing_or_failed` is enabled, multiple JWT tokens are present in the request headers and the JWKS fetch fails. ### Details This is caused by a re-entry bug in the `JwksFetcherImpl`. When the first token's JWKS fetch fails, `onJwksError()` callback triggers processing of the second token, which calls fetch() again on the same fetcher object. The original callback's reset() then clears the second fetch's state (`receiver_ and request_`) which causes a crash when the async HTTP response arrives. ### PoC * `allow_missing_or_failed` or `allow_missing` is enabled * The client send 2 Authorization headers * the remote JWKS fetching failed * There will be crash ### Impact DoS and Crash ### Mitigation * Disable the `allow_missing_or_failed` or `allow_missing`