IBM API Connect Developer Portal 5.0.0.0 through 5.0.8.2 could allow an unauthenticated attacker to execute system commands using specially crafted HTTP requests. IBM X-Force ID: 140605.

IBM API Connect 10.0.8.0 through 10.0.8.5, and 10.0.11.0 could allow a remote attacker to bypass authentication mechanisms and gain unauthorized access to the application.

Heap Buffer Overflow in Hexadecimal Conversion

IBM API Connect 12.1.0.0 through 12.1.0.3 uses default credentials which could allow an attacker to gain unauthorized access to the application before the system enforces a credential update.

IBM API Connect 10.0.8.0 through 10.0.8.9 and 12.1.0.0 through 12.1.0.3 contains an unauthenticated SQL injection vulnerability in the password reset functionality.

IBM API Connect 5.0.0.0 through 5.0.8.11 could allow a user to potentially inject code due to unsanitized user input. IBM X-Force ID: 202774.

IBM API Connect 5.0.0.0 and 5.0.8.4 is affected by a NoSQL Injection in MongoDB connector for the LoopBack framework. IBM X-Force ID: 148807.

IBM API Connect 5.0.0.0 and 5.0.8.6 Developer Portal can be exploited by app developers to download arbitrary files from the host OS and potentially carry out SSRF attacks. IBM X-Force ID: 159124.

IBM API Connect 5.0.0.0 through 5.0.8.11 could alllow a remote user to obtain sensitive information or conduct denial of serivce attacks due to open ports. IBM X-Force ID: 201018.

IBM API Connect 5.0.0.0 through 5.0.8.10 could potentially leak sensitive information or allow for data corruption due to plain text transmission of sensitive information across the network. IBM X-Force ID: 190990.

IBM API Connect 5.0.0.0, 5.0.8.4, 2018.1 and 2018.3.6 is vulnerable to CSV injection via the developer portal and analytics that could contain malicious commands that would be executed once opened by an administrator. IBM X-Force ID: 148692.

In the Linux kernel, the following vulnerability has been resolved:

Impact

yeoman-environment versions >= 2.9.0 and < 6.0.1 install missing local generator packages from caller-supplied package names without user confirmation. In downstream consumers that pass attacker-controlled project configuration into this path, this can result in arbitrary package installation and code execution during CLI bootstrap.

The vulnerable method is installLocalGenerators(), which calls repository.install() directly without prompting the user.

Patches

Upgrade to yeoman-environment 6.0.1, which adds an interactive confirmation prompt before installation (PR #753).

Workarounds

None.

Resources

- Fix commit 78d2af7

IBM API Connect 2018.1 and 2018.4.1.2 apis can be leveraged by unauthenticated users to discover login ids of registered users. IBM X-Force ID: 156544.

Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side.

Impact summary: A use after free can have a range of potential consequences such as the corruption of valid data, crashes or execution of arbitrary code.

However, the issue only affects clients that make use of TLSA records with both the PKIX-TA(0/PKIX-EE(1) certificate usages and the DANE-TA(2) certificate usage.

By far the most common deployment of DANE is in SMTP MTAs for which RFC7672 recommends that clients treat as 'unusable' any TLSA records that have the PKIX certificate usages. These SMTP (or other similar) clients are not vulnerable to this issue. Conversely, any clients that support only the PKIX usages, and ignore the DANE-TA(2) usage are also not vulnerable.

The client would also need to be communicating with a server that publishes a TLSA RRset with both types of TLSA records.

No FIPS modules are affected by this issue, the problem code is outside the FIPS module boundary.

An issue was discovered in musl libc 0.7.10 through 1.2.6. Stack-based memory corruption can occur during qsort of very large arrays, due to incorrectly implemented double-word primitives. The number of elements must exceed about seven million, i.e., the 32nd Leonardo number on 32-bit platforms (or the 64th Leonardo number on 64-bit platforms, which is not practical).

IBM API Connect 5.0.0.0-5.0.8.3 Developer Portal does not enforce Two Factor Authentication (TFA) while resetting a user password but enforces it for all other login scenarios. IBM X-Force ID: 144483.

React Router is a router for React. In versions 7.7.0 through 7.13.1, when using React Router's unstable React Server Components (RSC) APIs, there is a potential client-side Cross-Site Scripting (XSS) vulnerability in the RSC redirect handling if redirects come from untrusted sources. This does not impact applications that are not using the unstable RSC APIs in React Router. This is patched in version 7.13.2.

A heap-based buffer overflow problem was found in glib through an incorrect calculation of buffer size in the gescapeuristring() function. If the string to escape contains a very large number of unacceptable characters (which would need escaping), the calculation of the length of the escaped string could overflow, leading to a potential write off the end of the newly allocated string.

CoreDNS through 1.10.1 enables attackers to achieve DNS cache poisoning and inject fake responses via a birthday attack.

When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory.

Issue summary: During processing of a crafted CMS EnvelopedData message with KeyAgreeRecipientInfo a NULL pointer dereference can happen.

Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic operations occur resulting in Denial of Service.

When a CMS EnvelopedData message that uses KeyAgreeRecipientInfo is processed, the optional parameters field of KeyEncryptionAlgorithmIdentifier is examined without checking for its presence. This results in a NULL pointer dereference if the field is missing.

Applications and services that call CMSdecrypt() on untrusted input (e.g., S/MIME processing or CMS-based protocols) are vulnerable.

The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

Issue summary: When a delta CRL that contains a Delta CRL Indicator extension is processed a NULL pointer dereference might happen if the required CRL Number extension is missing.

Impact summary: A NULL pointer dereference can trigger a crash which leads to a Denial of Service for an application.

When CRL processing and delta CRL processing is enabled during X.509 certificate verification, the delta CRL processing does not check whether the CRL Number extension is NULL before dereferencing it. When a malformed delta CRL file is being processed, this parameter can be NULL, causing a NULL pointer dereference.

Exploiting this issue requires the X509VFLAGUSEDELTAS flag to be enabled in the verification context, the certificate being verified to contain a freshestCRL extension or the base CRL to have the EXFLAGFRESHEST flag set, and an attacker to provide a malformed CRL to an application that processes it.

The vulnerability is limited to Denial of Service and cannot be escalated to achieve code execution or memory disclosure. For that reason the issue was assessed as Low severity according to our Security Policy.

The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.

IBM API Connect uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information.

IBM API Connect 5.0.6.0 could allow a remote attacker to execute arbitrary commands on the system, caused by improper validation of URLs for the Developer Portal. By crafting a malicious URL, an attacker could exploit this vulnerability to execute arbitrary commands on the system with the privileges of the www-data user. IBM X-Force ID: 122956.

IBM API Connect uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information.

IBM API Connect 5.0.0.0 through 5.0.8.6 developer portal could allow a remote attacker to traverse directories on the system. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system. IBM X-Force ID: 163681.

IBM API Connect 10.0.0.0 through 10.0.5.0, 10.0.1.0 through 10.0.1.7, and 2018.4.1.0 through 2018.4.1.20 is vulnerable to External Service Interaction attack, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability to induce the application to perform server-side DNS lookups or HTTP requests to arbitrary domain names. By submitting suitable payloads, an attacker can cause the application server to attack other systems that it can interact with. IBM X-Force ID: 230264.

Summary PsySH automatically loads and executes a .psysh.php file from the Current Working Directory (CWD) on startup. If an attacker can write to a directory that a victim later uses as their CWD when launching PsySH, the attacker can trigger arbitrary code execution in the victim's context. When the victim runs PsySH with elevated privileges (e.g., root), this results in local privilege escalation.

Details PsySH supports per-directory configuration via a .psysh.php file located in the process CWD. This file is executed implicitly when PsySH starts, without requiring explicit opt-in and without validating that the file and directory are safe (e.g., owned by the current user and not group/world-writable).

This enables a CWD poisoning scenario: a low-privileged user can plant a malicious .psysh.php in any directory they can write to, then wait for a higher-privileged user to start PsySH while their shell is in that directory.

PoC 1. As a low-privileged user, create a malicious .psysh.php in an attacker-writable directory (example: /tmp):

bash bob@localhost:/tmp$ echo "<?php system('id > poc.txt'); ?>" > .psysh.php bob@localhost:/tmp# ls -lah .psysh.php -rw-r--r-- 1 bob bob 33 Jan 28 11:17 .psysh.php

2. As the victim user, start PsySH with CWD set to that directory and exit:

bash root@localhost:/tmp# cd /tmp root@localhost:/tmp# ./psysh Psy Shell v0.12.18 (PHP 8.1.2-1ubuntu2.23 — cli) by Justin Hileman New PHP manual is available (latest: 3.0.1). Update with doc --update-manual exit

INFO Goodbye.

3. Verify code execution triggered in the victim context:

bash bob@localhost:/tmp$ ls -lah poc.txt -rw-r--r-- 1 root root 39 Jan 28 11:19 poc.txt bob@localhost:/tmp$ cat poc.txt uid=0(root) gid=0(root) groups=0(root)

Impact

This is a CWD configuration poisoning issue leading to arbitrary code execution in the victim user’s context. If a privileged user (e.g., root, a CI runner, or an ops/debug account) launches PsySH with CWD set to an attacker-writable directory containing a malicious .psysh.php, the attacker can execute commands with that privileged user’s permissions, resulting in local privilege escalation.

Downstream consumers that embed PsySH inherit this risk. For example, Laravel Tinker (php artisan tinker) uses PsySH. If a privileged user runs Tinker while their shell is in an attacker-writable directory, the .psysh.php auto-load behavior can be abused in the same way to execute attacker-controlled code under the victim’s privileges.