SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

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 LD_PRELOAD environment variable, which allows local users to gain privileges by executing a setuid or setguid program with a…

HIGH 7.2EPSS 3.90%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.90%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 2.0
7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
EPSS
3.90% probability · 90th percentile
CISA KEV
Not listed
Weakness
CWE-264
Affected
freebsd/freebsd
Source
cve@mitre.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.