CVE-2018-16840
Critical
Description
A heap use-after-free flaw was found in curl versions from 7.59.0 through 7.61.1 in the code related to closing an easy handle. When closing and cleaning up an 'easy' handle in the `Curl_close()` function, the library code first frees a struct (without nulling the pointer) and might then subsequently erroneously write to a struct field within that already freed struct.
SeverityCritical
CVSS9.8
Exploit probability—
ProductHaxx Curl
PublishedOct 31, 2018
First seenOct 31, 2018
Weakness typeCWE-416Use after free
How to fix
Update
- haxx curl7.62.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| haxx curl | 7.59.0 ≤ v < 7.62.0 | 7.62.0 |
| canonical ubuntu_linux | 14.04, 16.04, 18.04, 18.10 | — |
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