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Vulnerability record · CVE-2002-0638 · published 12 August 2002

CVE-2002-0638: Mandrakesoft mandrake single network firewall vulnerability

MMandrakesoft · Mandrake Single Network Firewall

setpwnam.c in the util-linux package, as included in Red Hat Linux 7.3 and earlier, and other operating systems, does not properly lock a temporary file when modifying /etc/passwd, which may allow local users to gain privileges via a complex race condition that uses an open file descriptor in utility programs such as chfn and chsh.

6.2 CVSS 2.0 Medium EPSS 0.53% · top 57.5%
6.2CVSS 2.0 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
26References
16 Jun 2026Last modified by NVD

Description

setpwnam.c in the util-linux package, as included in Red Hat Linux 7.3 and earlier, and other operating systems, does not properly lock a temporary file when modifying /etc/passwd, which may allow local users to gain privileges via a complex race condition that uses an open file descriptor in utility programs such as chfn and chsh.

AV:L/AC:H/Au:N/C:C/I:C/A:C

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-043.0.txt
http://archives.neohapsis.com/archives/bugtraq/2002-07/0357.html
http://archives.neohapsis.com/archives/bugtraq/2002-07/0396.html
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000523
http://marc.info/?l=bugtraq&m=102795787713996&w=2
http://online.securityfocus.com/advisories/4320
http://rhn.redhat.com/errata/RHSA-2002-132.html PatchVendor Advisory
http://www.iss.net/security_center/static/9709.php
http://www.kb.cert.org/vuls/id/405955 PatchThird Party AdvisoryUS Government Resource
http://www.linux-mandrake.com/en/security/2002/MDKSA-2002-047.php
http://www.osvdb.org/5164
http://www.redhat.com/support/errata/RHSA-2002-137.html
http://www.securityfocus.com/bid/5344
ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-043.0.txt
http://archives.neohapsis.com/archives/bugtraq/2002-07/0357.html
http://archives.neohapsis.com/archives/bugtraq/2002-07/0396.html
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000523
http://marc.info/?l=bugtraq&m=102795787713996&w=2
http://online.securityfocus.com/advisories/4320
http://rhn.redhat.com/errata/RHSA-2002-132.html PatchVendor Advisory
http://www.iss.net/security_center/static/9709.php
http://www.kb.cert.org/vuls/id/405955 PatchThird Party AdvisoryUS Government Resource
http://www.linux-mandrake.com/en/security/2002/MDKSA-2002-047.php
http://www.osvdb.org/5164
http://www.redhat.com/support/errata/RHSA-2002-137.html
http://www.securityfocus.com/bid/5344

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Source: NIST National Vulnerability Database (record CVE-2002-0638), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.