CVE-2016-9953

moderate-risk

Published 2018-03-12

The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, allows remote attackers to obtain sensitive information, cause a denial of service (crash), or possibly have unspecified other impact via a wildcard certificate name, which triggers an out-of-bounds read.

Do I need to act?

1.9% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (1)

Curl

Affected Vendors

Haxx

References (4)

Vendor Advisory https://curl.haxx.se/CVE-2016-9952.patch

Vendor Advisory https://curl.haxx.se/docs/adv_20161221C.html

Vendor Advisory https://curl.haxx.se/CVE-2016-9952.patch

Vendor Advisory https://curl.haxx.se/docs/adv_20161221C.html

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moderate-risk

Severity 32/34 · Critical

Exploitability 5/34 · Minimal

Exposure 5/34 · Minimal