Home/CVE/lib/ssluse.c in cURL and libcurl 7.4 through 7.19.5, when OpenSSL is used, does not properly handle a '\0' character in
CVE

CVE-2009-2417

lib/ssluse.c in cURL and libcurl 7.4 through 7.19.5, when OpenSSL is used, does not properly handle a '\0' character in

lib/ssluse.c in cURL and libcurl 7.4 through 7.19.5, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

HIGH · CVSS 7.5 EPSS 0.0733
Schedule remediation
  • EPSS percentile: top 8% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
▤

Affected Products & Versions

1
curl libcurlall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotential DLL Sideloading Of Libcurl.DLL Via GUP.EXE
▣

Scoring & Timeline

7.5
HIGH · CVSS v2 (legacy) · secalert@redhat.com
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Published to NVD14 Aug 2009 · 03:16 PM
⚑

Vendor Advisories

4
suse-csafopenSUSE-SU-2024:10303-1
usnUSN-1158-1
usnUSN-818-1
rhsaRHSA-2009:1209Moderate
🔗

References & Sources

28
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://curl.haxx.se/CVE-2009-2417/curl-7.10.6-CVE-2009-2417.patchPatch
http://curl.haxx.se/CVE-2009-2417/curl-7.11.0-CVE-2009-2417.patchPatch
http://curl.haxx.se/CVE-2009-2417/curl-7.12.1-CVE-2009-2417.patchPatch
http://curl.haxx.se/CVE-2009-2417/curl-7.15.1-CVE-2009-2417.patchPatch
http://curl.haxx.se/CVE-2009-2417/curl-7.15.5-CVE-2009-2417.patchPatch
http://curl.haxx.se/CVE-2009-2417/curl-7.16.4-CVE-2009-2417.patchPatchVendor Advisory
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