CVE-2017-8816

Advisory lineage Upstream: 0 Downstream: 10
Modified
Published: 29 Nov 2017, 18:00
Last modified:15 Apr 2026, 21:01

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (nvd)
EPSS Score
0.45% LOW
0% probability +0.02%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

29 Nov 2017, 18:00
Published
Vulnerability first disclosed
15 Apr 2026, 21:01
Last Modified
Vulnerability information updated

Description

The NTLM authentication feature in curl and libcurl before 7.57.0 on 32-bit platforms allows attackers to cause a denial of service (integer overflow and resultant buffer overflow, and application crash) or possibly have unspecified other impact via vectors involving long user and password fields.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v3.0•CRITICAL•Score: 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.45%• Percentile: 64%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • debian•debian_linux

    8.0 | 9.0

  • haxx•curl

    > 7.36.0, ≤ 7.56.1

  • haxx•libcurl

    ≥ 7.36.0, ≤ 7.56.1

References (8)