#java

### Overview A flaw in Jackson-core's `JsonLocation._appendSourceDesc` method allows up to 500 bytes of unintended memory content to be included in exception messages. When parsing JSON from a byte array with an offset and length, the exception message incorrectly reads from the beginning of the array instead of the logical payload start. This results in possible **information disclosure** in systems using **pooled or reused buffers**, like Netty or Vert.x. ### Details The vulnerability affects the creation of exception messages like: ``` JsonParseException: Unexpected character ... at [Source: (byte[])...] ``` When `JsonFactory.createParser(byte[] data, int offset, int len)` is used, and an error occurs while parsing, the exception message should include a snippet from the specified logical payload. However, the method `_appendSourceDesc` ignores the `offset`, and always starts reading from index `0`. If the buffer contains residual sensitive data from a previous request, such a...

CWE ID: CWE-532 (Insertion of Sensitive Information into Log File) CVSS: 6.2 (Medium) Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N **Affected Component:** Facebook Authentication Logging **Version:** Para v1.50.6 **File Path:** para-1.50.6/para-server/src/main/java/com/erudika/para/server/security/filters/FacebookAuthFilter.java **Vulnerable Line(s):** Line 184 (logger.warn(...) with raw access token) Technical Details: The vulnerability is located in FacebookAuthFilter.java, where a failed request to Facebook’s user profile endpoint triggers the following log statement: ```java logger.warn("Facebook auth request failed: GET " + PROFILE_URL + accessToken, e);` ``` Here, `PROFILE_URL` is a constant: ```java private static final String PROFILE_URL = "https://graph.facebook.com/me?fields=name,email,picture.width(400).type(square).height(400)&access_token="; ``` This results in the full request URL being logged, including the user's access token in plain text. Since WARN-level ...

In this week's newsletter, Martin emphasizes that awareness, basic cyber hygiene and preparation are essential for everyone, and highlights Talos' discovery of the new PathWiper malware.

A buffer overflow vulnerability exists in the mstp.ko kernel module, responsible for processing BACnet MS/TP frames over serial (RS485). The SendFrame() function writes directly into a statically sized kernel buffer (alloc_entry(0x1f5)) without validating the length of attacker-controlled data (param_5). If an MS/TP frame contains a crafted payload exceeding 492 bytes, the function performs out-of-bounds writes beyond the allocated 501-byte buffer, corrupting kernel memory. This flaw allows local or physically connected attackers to trigger denial-of-service or achieve remote code execution in kernel space. Tested against version 3.08.03 with a custom BACnet frame over /dev/ttyS0.

### Summary Source code may be stolen when you access a malicious web site. ### Details Because the request for classic script by a script tag is not subject to same origin policy, an attacker can inject `<script src="http://localhost:8080/main.js">` in their site and run the script. Note that the attacker has to know the port and the output entrypoint script path. Combined with prototype pollution, the attacker can get a reference to the webpack runtime variables. By using `Function::toString` against the values in `__webpack_modules__`, the attacker can get the source code. ### PoC 1. Download [reproduction.zip](https://github.com/user-attachments/files/18426585/reproduction.zip) and extract it 2. Run `npm i` 3. Run `npx webpack-dev-server` 4. Open `https://e29c9a88-a242-4fb4-9e64-b24c9d29b35b.pages.dev/` 5. You can see the source code output in the document and the devtools console.  The scr...

Google has released an important update for Chrome, patching one actively exploited zero-day and two other security flaws

Hibernate Validator before 6.2.0 and 7.0.0, by default and depending how it is used, may interpolate user-supplied input in a constraint violation message with Expression Language. This could allow an attacker to access sensitive information or execute arbitrary Java code. Hibernate Validator as of 6.2.0 and 7.0.0 no longer interpolates custom constraint violation messages with Expression Language and strongly recommends not allowing user-supplied input in constraint violation messages. CVE-2020-5245 and CVE-2025-4428 are examples of related, downstream vulnerabilities involving Expression Language intepolation of user-supplied data.

If you enable Basic Authentication in Pekko Management using the Java DSL, the authenticator may not be properly applied. Users that rely on authentication instead of making sure the Management API ports are only available to trusted users are recommended to upgrade to version 1.1.1, which fixes this issue.

About Cross Site Scripting – Zimbra Collaboration (CVE-2024-27443) vulnerability. Zimbra Collaboration is a collaboration software suite that includes a mail server and a web client. An attacker can send an email containing a specially crafted calendar header with an embedded payload. If the user opens the email in the classic Zimbra web interface, the malicious […]

### Impact When using end-to-end encryption, a stored XSS vulnerability can be exploited by uploading a file with JavaScript code embedded in the filename. After upload and every time someone opens the upload list, the script is then parsed. With the affected versions <v2.0, there was no user permission system implemented, therefore all authenticated users were already able to see and modify all resources, even if end-to-end encrypted, as the encryption key had to be the same for all users with <v2.0. Nethertheless with XSS, other attack vectors like redirection or crypto mining would be possble. ### Patches This CVE has been fixed in v2.0.0 ### Workarounds If you are the only authenticated user using Gokapi, you are not affected. A workaround would be to disable end-to-end encryption.