Security readout for executives and security teams
A legacy Linux utility called fld, part of the Kanji on Console (KON) package, has a flaw that lets someone already logged in to a Linux system trick the program into giving them full administrator (root) control. It requires local access and a specially crafted input file, so it is not a remote internet threat, but it undermines account boundaries on affected legacy systems. Very limited. KON/kon2 is a late-1990s Japanese-language console utility for Linux and is not present in modern distributions or typical enterprise builds. Exposure is essentially restricted to unmaintained legacy Linux systems that still carry the KON package with a suid or privileged fld binary. Low priority for modern environments. Address opportunistically during legacy system decommissioning or hardening reviews; not a candidate for emergency change. Mitigation focus: Inventory legacy Linux hosts for the KON/kon2 package and remove if not required.; If KON is required, remove the setuid bit from fld or restrict execution to trusted users.; Upgrade to a maintained Linux distribution where KON is not shipped or has been patched..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookup- Severity
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- Known Exploited
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CNA and ADP enrichment extracted from CVE v5
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Source materials
- CVE List V5 sourceCVE List V5
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