CVE-2003-0189

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 15.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2003-06-09 · updated 2026-06-16

Description

The authentication module for Apache 2.0.40 through 2.0.45 on Unix does not properly handle threads safely when using the crypt_r or crypt functions, which allows remote attackers to cause a denial of service (failed Basic authentication with valid usernames and passwords) when a threaded MPM is used.

Affected products

Apache HTTP Server: 2.0.40, 2.0.41, 2.0.42, 2.0.43, 2.0.44, 2.0.45

References

http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000661
http://marc.info/?l=bugtraq&m=105418115512559&w=2
http://secunia.com/advisories/8881
http://www.apache.org/dist/httpd/Announcement2.html
http://www.kb.cert.org/vuls/id/479268
http://www.redhat.com/support/errata/RHSA-2003-186.html
http://www.securityfocus.com/bid/7725
https://exchange.xforce.ibmcloud.com/vulnerabilities/12091
https://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E

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