Back
CVE-2009-4146
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…
High7.2EPSS 3.9%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 3.9% · top 9.7% of all CVEs (5 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Weakness
Affected products
n/a
- affected n/a
References (8)
- 37154 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20091201 Upcoming FreeBSD Security Advisory (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 37517 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://people.freebsd.org/~cperciva/rtld.patch (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20091130 ** FreeBSD local r00t zeroday (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 1023250 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 20091201 Re: ** FreeBSD local r00t zeroday (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://packetstormsecurity.com/files/152997/FreeBSD-rtld-execl-Privilege-Escalation.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2009-4146)Record last updated .