Vulnerability Details : CVE-2009-4146

Public exploit exists!
The _rtld function in the Run-Time Link-Editor (rtld) in libexec/rtld-elf/rtld.c in FreeBSD 7.1, 7.2, and 8.0 does not clear the LD_PRELOAD environment variable, which allows local users to gain privileges by executing a setuid or setguid program with a modified LD_PRELOAD variable containing an untrusted search path that points to a Trojan horse library, a different vector than CVE-2009-4147.
Published 2009-12-02 18:30:00
Updated 2019-05-22 03:29:00
Source MITRE
View at NVD,   CVE.org

Threat overview for CVE-2009-4146

Top countries where our scanners detected CVE-2009-4146
Top open port discovered on systems with this issue 80
IPs affected by CVE-2009-4146 1
Find out if you* are affected by CVE-2009-4146!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2009-4146

EPSS FAQ
0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2009-4146

  • FreeBSD rtld execl() Privilege Escalation
    Disclosure Date: 2009-11-30
    First seen: 2020-04-26
    exploit/freebsd/local/rtld_execl_priv_esc
    This module exploits a vulnerability in the FreeBSD run-time link-editor (rtld). The rtld `unsetenv()` function fails to remove `LD_*` environment variables if `__findenv()` fails. This can be abused to load arbitrary shared objects using

CVSS scores for CVE-2009-4146

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.2
 HIGH AV:L/AC:L/Au:N/C:C/I:C/A:C
3.9
10.0
 NIST

CWE ids for CVE-2009-4146

  • Assigned by: nvd@nist.gov (Primary)

References for CVE-2009-4146

Products affected by CVE-2009-4146

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