Vulnerability in Haxx Curl
CVE-2016-9952
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, makes it easier for remote attackers to conduct man-in-the-middle attacks via a crafted wildcard SAN in a server certificate, as demonstrated by "*.com."
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (68.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- curl.haxx.se/docs/adv_20161221B.html (Vendor Advisory)
- curl.haxx.se/CVE-2016-9952.patch (Vendor Advisory)
Frequently asked questions
- What is CVE-2016-9952?
- CVE-2016-9952 is a high-severity vulnerability in Haxx Curl, classified under Improper Certificate Validation. CVSS score: 8.1/10. Published 2018-03-12.
- How severe is CVE-2016-9952?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2016-9952 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.