CVE-2015-5287Escalación de privilegios en Red Hat ABRT vía symlink
Red Hat Automatic Bug Reporting Tool (ABRT) contains a privilege escalation vulnerability that could allow local users with certain permissions to gain privileges via a symlink attack on a file with a predictable name. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.
Ver en NVDAnálisis
La herramienta de reporte de errores ABRT en sistemas Red Hat y derivados permite que un usuario local obtenga privilegios elevados mediante un ataque de enlace simbólico (symlink) en archivos con nombres predecibles. Esta vulnerabilidad está siendo explotada activamente según el catálogo KEV de CISA. Es fundamental actualizar el paquete abrt en servidores Linux afectados o deshabilitar el servicio si no es indispensable.
Roles relevantes
Severidad
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCWE-59CISA KEV
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
EPSS
Afecta
redhat:automatic_bug_reporting_tooloracle:linuxredhat:enterprise_linuxredhat:enterprise_linux_desktopredhat:enterprise_linux_hpc_noderedhat:enterprise_linux_serverredhat:enterprise_linux_workstationDescripción técnica
The abrt-hook-ccpp help program in Automatic Bug Reporting Tool (ABRT) before 2.7.1 allows local users with certain permissions to gain privileges via a symlink attack on a file with a predictable name, as demonstrated by /var/tmp/abrt/abrt-hax-coredump or /var/spool/abrt/abrt-hax-coredump.
Referencias
- http://packetstormsecurity.com/files/154592/ABRT-sosreport-Privilege-Escalation.html
- http://rhn.redhat.com/errata/RHSA-2015-2505.html
- http://www.openwall.com/lists/oss-security/2015/12/01/1
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/78137
- https://bugzilla.redhat.com/show_bug.cgi?id=1266837
- https://github.com/abrt/abrt/commit/3c1b60cfa62d39e5fff5a53a5bc53dae189e740e
- https://www.exploit-db.com/exploits/38832/