CVE-2000-0824
The unsetenv function in glibc 2.1.1 does not properly unset an environmental variable if the variable is provided twice to a program,…
- 7.2HighCVSS base score
- 1.2%Exploitation in 30 daysEPSS · top 31% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- ProFTPd 1.2 pre6 - 'snprintf' Remote Root (Exploit-DB entry) (opens in a new tab)
EDB-ID 19503remote, linuxpublished 17 Sept 1999Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 3 months later
· 3 months later
Published
- 24 years later
· 24 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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)
- 1.2% · top 31% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Affected products
n/a
- affected n/a
References
15
- glibc-ld-unsetenv(5173) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 19990917 A few bugs... (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20000924 glibc locale security problem (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 20000906 [slackware-security]: glibc 2.1.3 vulnerabilities patched (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- RHSA-2000:057 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- MDKSA-2000:045 (opens in a new tab)vendor-advisoryx_refsource_MANDRAKEx_transferred
- 20000902 Conectiva Linux Security Announcement - glibc (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 1639 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- TLSA2000020-1 (opens in a new tab)vendor-advisoryx_refsource_TURBOx_transferred
- 20000902 glibc: local root exploit (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 20000831 glibc unsetenv bug (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20000905 Conectiva Linux Security Announcement - glibc (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 648 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- CSSA-2000-028.0 (opens in a new tab)vendor-advisoryx_refsource_CALDERAx_transferred
- MDKSA-2000:040 (opens in a new tab)vendor-advisoryx_refsource_MANDRAKEx_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)
- EUVD EUVD-2000-0811 (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://cveledger.app/cve/CVE-2000-0824)Record last updated .