8.1high
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 b…
Published 8 y ago · modified 4 mo ago · JSON
CVSS
8.1
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
1.3%
percentile 70%
Public exploits
0
none known
Summary
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."
CISA SSVC assessment
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction (EPSS)
1.28% probability of exploitation in the next 30 days, higher than 70% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CISA ADP | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.0 | 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- haxx curl
Classification
- Weakness
- CWE-295 Improper Certificate Validation
References
- curl.haxx.se /docs/adv_20161221B.html · x_refsource_CONFIRM, x_transferred
- curl.haxx.se /CVE-2016-9952.patch · x_refsource_CONFIRM, x_transferred
Sources
- CVE List: CVE-2016-9952
- NVD: CVE-2016-9952
vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.