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Unrated severityNVD Advisory· Published Feb 20, 2009· Updated Jun 16, 2026

CVE-2009-0641

CVE-2009-0641

Description

sys_term.c in telnetd in FreeBSD 7.0-RELEASE and other 7.x versions deletes dangerous environment variables with a method that was valid only in older FreeBSD distributions, which might allow remote attackers to execute arbitrary code by passing a crafted environment variable from a telnet client, as demonstrated by an LD_PRELOAD value that references a malicious library.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

9
  • FreeBSD/FreeBSD8 versions
    cpe:2.3:o:freebsd:freebsd:7.0-release:*:*:*:*:*:*:*+ 7 more
    • cpe:2.3:o:freebsd:freebsd:7.0-release:*:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:7.0:*:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:7.0:beta_4:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:7.0:current:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:7.0_beta4:*:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:7.0_releng:*:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:7.1:*:*:*:*:*:*:*
    • cpe:2.3:o:freebsd:freebsd:7.1:rc1:*:*:*:*:*:*
  • FreeBSD/telnetllm-fuzzy
    Range: 7.0-RELEASE and other 7.x versions

Patches

Vulnerability mechanics

References

5

News mentions

0

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