CVE-2000-0824: n/a vulnerability

CVE-2000-0824: The unsetenv function in glibc 2.1.1 does not properly unset an environmental variable if the variable is p...

The unsetenv function in glibc 2.1.1 does not properly unset an environmental variable if the variable is provided twice to a program, which could allow local users to execute arbitrary commands in setuid programs by specifying their own duplicate environmental variables such as LD_PRELOAD or LD_LIBRARY_PATH.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 05:28 UTC (UTC+00:00)

Security readout for executives and security teams

A flaw in an old version of glibc (the core Linux system library) let a local user on a Linux machine trick privileged programs into running code as root. It affected many Linux distributions in 2000 and was addressed by vendor patches at the time. Modern systems patched over two decades ago are not at risk from this specific bug. Historically broad: Linux distributions shipping glibc 2.1.1 (Red Hat, Debian, SUSE, Mandrake, Slackware, Conectiva, TurboLinux, Caldera issued advisories). Exploitation required a local shell account. Today, exposure is limited to unmaintained legacy systems still running glibc 2.1.x, which should not be in production environments. Very low for modern environments; this bug was fixed by every major Linux vendor in 2000. Priority is only material if the organization operates legacy or embedded Linux systems still running glibc 2.1.x, in which case those systems should be replaced or upgraded as part of standard end-of-life risk management. Mitigation focus: Confirm all Linux systems run a vendor-supported glibc release; upgrade any legacy glibc 2.1.x hosts.; Apply distribution glibc updates referenced in RHSA-2000:057, MDKSA-2000:045, and equivalent vendor advisories.; Audit and minimize setuid/setgid binaries on shared multi-user hosts..

Prepared: Jul 12, 2026, 00:03 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 22, 2001, 05:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

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2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
glibc-ld-unsetenv(5173)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

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CWE details

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