CVE-2019-19726

OpenBSD through 6.6 allows local users to escalate to root because a check for LDLIBRARYPATH in setuid programs can be defeated by setting a very small RLIMITDATA resource limit. When executing chpass or passwd which are setuid root, dlsetupenv in ld.so tries to strip LDLIBRARYPATH from the...

OpenBSD - Dynamic Loader chpass Privilege Escalation (Metasploit)

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'OpenBSD Dynamic Loader chpass Privilege Escalation', 'Description' = %q This module exploits a vulnerability in the OpenBSD ld.so dynamic loader...

OpenBSD Dynamic Loader chpass Privilege Escalation Exploit

This Metasploit module exploits a vulnerability in the OpenBSD ld.so dynamic loader CVE-2019-19726. The dlgetenv function fails to reset the LDLIBRARYPATH environment variable when set with approximately ARGMAX colons. This can be abused to load libutil.so from an untrusted path, using...

OpenBSD Dynamic Loader chpass Privilege Escalation

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'OpenBSD Dynamic Loader chpass Privilege Escalation', 'Description' = %q This module exploits a vulnerability in the OpenBSD ld.so dynamic loader...

OpenBSD Dynamic Loader chpass Privilege Escalation

This module exploits a vulnerability in the OpenBSD ld.so dynamic loader CVE-2019-19726. The dlgetenv function fails to reset the LDLIBRARYPATH environment variable when set with approximately ARGMAX colons. This can be abused to load libutil.so from an untrusted path, using LDLIBRARYPATH in...

OpenBSD 6.x - Dynamic Loader Privilege Escalation Exploit

Local Privilege Escalation in OpenBSD's dynamic loader CVE-2019-19726 ============================================================================== Contents ============================================================================== Summary Analysis Demonstration Acknowledgments...

OpenBSD 6.x - Dynamic Loader Privilege Escalation

OpenBSD 6.x - Dynamic Loader Privilege Escalation Qualys Security Advisory Local Privilege Escalation in OpenBSD's dynamic loader CVE-2019-19726 ============================================================================== Contents...

OpenBSD 6.x - Dynamic Loader Privilege Escalation

Qualys Security Advisory Local Privilege Escalation in OpenBSD's dynamic loader CVE-2019-19726 ============================================================================== Contents ============================================================================== Summary Analysis Demonstration...

CVE-2019-19726

creationtimestamp| type| source ---|---|--- 2019-12-15 14:49:34+00:00| published-proof-of-concept| https://t.me/antichat/7350 2019-12-15 15:00:05+00:00| seen| https://t.me/canyoupwnme/6180 2019-12-16 00:00:00+00:00| exploited| https://www.exploit-db.com/exploits/47780 2019-12-27 10:04:24+00:00|...

Qualys Security Advisory - OpenBSD Dynamic Loader Privilege Escalation

Qualys Security Advisory Local Privilege Escalation in OpenBSD's dynamic loader CVE-2019-19726 ============================================================================== Contents ============================================================================== Summary Analysis Demonstration...

CVE-2019-19726

OpenBSD OpenBSD ld.so local privilege escalation (CVE-2019-19726) affects OpenBSD releases up to 6.6. The vulnerability arises when a small RLIMIT_DATA limit prevents _dl_setup_env from stripping LD_LIBRARY_PATH for setuid root programs (chpass/passwd), allowing an attacker to execute code as roo...