CVE-2013-4545

Home/CVE/cURL and libcurl 7.18.0 through 7.32.0, when built with OpenSSL, disables the certificate CN and SAN name field verifica

CVE

cURL and libcurl 7.18.0 through 7.32.0, when built with OpenSSL, disables the certificate CN and SAN name field verifica

cURL and libcurl 7.18.0 through 7.32.0, when built with OpenSSL, disables the certificate CN and SAN name field verification (CURLOPT_SSL_VERIFYHOST) when the digital signature verification (CURLOPT_SSL_VERIFYPEER) is disabled, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

MEDIUM · CVSS 4.3 EPSS 0.00358

Monitor

No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence

Sigma rules7 YARA rules0

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Affected Products & Versions

haxx curlall versions

haxx libcurlall versions

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Sigma Hunt Rules

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.

producthighSuspicious Download and Execute Pattern via Curl/Wget

producthighSuspicious File Download From File Sharing Domain Via Curl.EXE

producthighSuspicious File Download From IP Via Curl.EXE

producthighCurl Download And Execute Combination

producthighSuspicious Curl.EXE Download

productmediumSuspicious Curl File Upload - Linux

Show all 7 top matches

productmediumSuspicious Curl Change User Agents - Linux

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Scoring & Timeline

4.3

MEDIUM · 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:M/Au:N/C:N/I:P/A:N

Published to NVD23 Nov 2013 · 11:55 AM

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Vendor Advisories

suse-csafopenSUSE-SU-2024:10303-1
suse-csafSUSE-SU-2015:0962-1
usnUSN-2048-1

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://curl.haxx.se/docs/adv_20131115.htmlVendor Advisory

http://lists.opensuse.org/opensuse-updates/2013-12/msg00047.html

http://lists.opensuse.org/opensuse-updates/2013-12/msg00053.html

http://www.debian.org/security/2013/dsa-2798

http://www.oracle.com/technetwork/topics/security/cpuapr2015-2365600.html

http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html

Show all 9 references

http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html

http://www.ubuntu.com/usn/USN-2048-1

https://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04463322

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