SB2025102871 - Multiple vulnerabilities in Red Hat build of Cryostat 4.0
Published: October 28, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Path traversal (CVE-ID: CVE-2025-59343)
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to symlink validation bypass if the destination directory is predictable with a specific tarball. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
2) NULL pointer dereference (CVE-ID: CVE-2025-6395)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when a TLS 1.3 handshake involves a Hello Retry Request and the second Client Hello omits the PSK which was present in the first Client Hello. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
3) Double free (CVE-ID: CVE-2025-32988)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when exporting a certificate with an otherName in the SAN (subject alternative name) extension. A remote attacker can trick the victim into export a specially crafted certificate, trigger a double free error on the ASN.1 structure and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
4) Heap-based buffer overflow (CVE-ID: CVE-2025-32989)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when handling the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. A remote attacker can supply a specially crafted X.509 certificate to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) NULL pointer dereference (CVE-ID: CVE-2025-32990)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when the certtool program is invoked with a template file with a number of string pairs for a single keyword. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.