Guancheng Li

A relative path traversal issue exists in Windows libarchive. This flaw allows an unauthorized attacker to perform tampering over a network. Path traversal is a technique where an attacker uses special characters or sequences to access files or directories outside the intended folder.

An integer overflow occurs during the processing of a maliciously crafted image, which may lead to arbitrary code execution. This issue was addressed by implementing improved input validation.

In ptrace-based intercept mode, the software fails to apply intercept policy checks to the `execveat` system call. This allows users who are permitted to run specific commands to execute denied programs by calling `execveat` directly or through `fexecve`, which bypasses policy enforcement and logging.

A flaw exists where the software fails to clear proxy authentication credentials when instructed to do so. This results in old credentials remaining available and potentially being used for subsequent transfers that should not have access to them.

A NULL pointer dereference can occur in a CMP client application when processing a crafted CMP response. An attacker controlling a CMP server or acting as a man-in-the-middle can send a CRMF CertRepMessage containing an EncryptedValue structure where the `symmAlg` field includes an algorithm OID but lacks a parameters field. This leads to an application crash and a Denial of Service. This issue affects applications that process untrusted CMP/CRMF messages.

Symlink following in `pg basebackup` plain format and in `pg rewind` allows an origin superuser to overwrite local files, such as '/var/lib/postgres/.bashrc', which can lead to the hijacking of the operating system account. This issue has practical implications if actions are taken between the execution of these commands and the server start, such as moving files to a different virtual machine or snapshotting the virtual machine.

Name of the Vulnerable Software and Affected Versions OpenSSL versions 3.0 through 3.6 Description Processing a specially crafted CMS EnvelopedData message with KeyTransportRecipientInfo can lead to a NULL pointer dereference. This can cause applications that process attacker-controlled CMS data to crash before authentication or cryptographic operations, resulting in a Denial of Service. The issue occurs when examining the optional parameters field of RSA-OAEP SourceFunc algorithm identifier without verifying its presence, leading to a NULL pointer dereference if the field is missing. Applications and services using CMS decrypt() on untrusted input, such as S/MIME processing or CMS-based protocols, are affected. Recommendations Update to a version after 3.6. Update to a version after 3.5. Update to a version after 3.4. Update to a version after 3.3. Update to a version after 3.0.

Name of the Vulnerable Software and Affected Versions OpenSSL versions 3.0 through 3.6 Description Processing a crafted CMS EnvelopedData message with KeyAgreeRecipientInfo can lead to a NULL pointer dereference. This can cause applications that process attacker-controlled CMS data to crash before authentication or cryptographic operations, resulting in a Denial of Service. The issue occurs when the optional parameters field of KeyEncryptionAlgorithmIdentifier is examined without checking for its presence, leading to a NULL pointer dereference if the field is missing. Applications and services calling CMS decrypt() on untrusted input, such as S/MIME processing or CMS-based protocols, are affected. Recommendations Update to a version after 3.6. As a temporary workaround, avoid processing untrusted CMS EnvelopedData messages with KeyAgreeRecipientInfo.