CVE-2019-5435 : An integer overflow in curl's URL API results in a buffer overflow in libcurl 7.

An integer overflow in curl's URL API results in a buffer overflow in libcurl 7.62.0 to and including 7.64.1.

Published 2019-05-28 19:29:06

Updated 2020-10-20 22:15:35

Source HackerOne

View at NVD, CVE.org

Vulnerability category: Overflow

Products affected by CVE-2019-5435

Haxx » Curl
Versions from including (>=) 7.62.0 and up to, including, (<=) 7.64.1
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.18%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 40 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:N/I:N/A:P	8.6	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
3.7	LOW	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L	2.2	1.4	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: Low

CWE-131 Incorrect Calculation of Buffer Size

The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.

Assigned by: support@hackerone.com (Secondary)
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.

Assigned by: nvd@nist.gov (Primary)

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